How does the extended hexagon technique work?

The extended hexagon technique is a variation of the classic crochet hexagon in which two sides are lengthened with additional chains. Instead of a standard shape, these extensions create an “L” shape when folded, giving you better control over the garment’s length and sleeve width for a more tailored fit.

Is this dress worked in one piece?

The dress is made by crocheting two identical hexagons, then adding turning rows to three of the sides to increase bust, hip, and length. We then sew the shoulders, front, and back to assemble the final garment.

Can I use worsted-weight (4) yarn for this Hexi dress?

Absolutely! My crochet hexagon dress sample uses fine/sport (2) yarn, but you can use worsted-weight with a 5 mm (H) hook and a 51-chain foundation. After Round 1, your piece should measure about 16 ¾ inches (43 cm) long, then continue as written in the pattern.

Is it easy to customize the size of the dress?

Yes – depending on your skill level. Crochet the core hexagons to your desired armhole depth, then add turning rows to adjust the bust, hips, and length. I’ve included helpful tips throughout the pattern to guide you.

Do I need to block the dress?

Blocking is optional but recommended. Light steaming or a hot iron, especially on the collar and cuffs, helps give the dress a clean and polished finish.

DIY Extended Crochet Hexagon Dress | Easy Pattern

I’m seriously obsessed with this crochet hexagon dress that I designed with the extended hexagon technique. Definitely not your typical garment pattern! It’s the perfect throw-on over a swimsuit, yet modest enough for a summer stroll in the park.

Here’s a photo of me wearing my extended hexagon dress made with self-striping yarn:

PIN THIS FOR LATER

Back view of crochet hexagon dress showing extended hexagon construction and colorwork — Crochet Hexagon Dress Close-Up

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Key Takeaways:

This crochet hexagon dress is made using the extended hexagon technique, offering better control over fit and sleeve width.
You’ll crochet two identical hexagons, then shape and assemble the dress.
Instructions are included for three sizes: XS, S/M, and L/XL.
The pattern uses granny stitch clusters, making it repetitive and fun to work on.
Partial/turning rows allow you to customize the fit around the bust, hips, and length.
Designed with fine/sport (2) yarn for a lightweight feel, but other yarn weights can be used with adjustments.
Features a polo-style collar, plackets, buttonholes, and fitted cuffs for a polished finish.
Perfect as a summer dress or swimsuit cover-up.

From my experience designing a moss-stitch hexagon cardigan back in 2023, I can tell you that the extended hexagon makes customization so much easier. Not to mention, it’s also so simple to keep those sleeves from getting too wide.

I’ve included all the instructions for this dress below, along with sizing tips and yarn recommendations. If you make this dress, please comment, share, or email me to show your finished project.

Crochet Hexagon Dress Pattern Highlights

The dress begins with a long foundation chain, which serves as the base for a granny-stitch hexagon (we make two identical hexagons!). Partial rows are then added, turning at corners 1 and 4, before the dress is assembled by sewing the shoulders, front, and back.

The design also includes a polo-style collar with plackets and buttons. All worked in single crochet. The fitted cuffs are similarly finished in single crochet for a neat appearance.

This pattern uses standard US Crochet Terminology.
Skill Level: Experienced with garments.
The pattern was written as follows: XS (S/M, L/XL).
When/if only one number is given, it applies to all sizes. When/if a number is repeated, it means the same number applies to multiple sizes.
The pictured model in this article is 5’6″ (167 cm) tall with a 44″ (112 cm) hip and 38″ (96.5 cm) bust circumference, wearing size S/M.

Crochet hexagon dress back view with structured fit and short sleeves

Ready to start making your crochet hexagon dress? Below is all the information needed to set you up for success in making your hexagon crochet dress.

What You’ll Need:

Yarn: Fine (#2) Sports weight yarn, or Light Worsted/DK if you can meet gauge – more on the yarn below.
3.75 mm (F) hook for the dress and placket, or any other size needed to meet gauge.
3.25 mm (D) hook for the cuffs and the collar
4 12 mm buttons and a matching thread to sew them on
Sewing needle
Tapestry needle, stitch marker, and scissors

Yarn Specifics:

My crochet hexagon dress, featured in this pattern, was made with Premier Cotton Sprout Stripes, available in 874-yard, 7-oz skeins. I used the color Cream Stripe.

Approximate amount needed:

XS: 1,600-1,700 yards (1,463-1,555 m)
S/M: 1,800-1,900 yards (1,646-1,737 m)
L/XL: 2,200-2,300 yards (2,011-2,103 m)

Yarn Substitutes:

Catania Originals Yarn 100% Mercerized Cotton.
Cotton Fair Premier Yarns Cotton/Acrylic Blend – another favorite of mine.
YarnArt Flowers Gradient Cotton/Acrylic Blend.

Woman standing in front of gray curtains, showcasing the front a colorful, striped hexagon crochet dress.

Pattern Abbreviations (US terms)

Do you like free PDF’s? You can get a Free Guide to Abbreviations & Terms (PDF download right here on the blog.

bet: between
ch(s): chain(s)
cluster: 3 double crochets in the same stitch
dc: double crochet
FO: fasten-off or finish-off
rem: remain/remaining
rep: repeat
RS: right side
sc: single crochet
sk: skip
sl st: slip stitch
sp: space
st(s): stitch(es)
[ ]: Numbers within brackets are stitch count.
Asterisks are used to indicate which instructions are repeated.

Project Size Chart

This crochet hexagon dress pattern includes instructions for three sizes: XS, S/M, and L/XL. Below, you’ll find the size table, a dress schematic, and tips for adjusting the fit. The measurements shown were taken before washing.

The crochet hexagon dress size table with an schematic diagram of the dress's shape

Gauge

Getting the right stitch tension is crucial for a successful finished crochet hexagon dress. If you’re an experienced crocheter, you might be able to handle sizing customization on your own. Otherwise, make sure not to skip this step.

For the gauge swatch, ch 23 with Fine (2) yarn and a 3.75 mm (F) hook, then follow the pattern instructions for rounds 1 to 4 or refer to the chart below. Your swatch should measure approximately 8 ¼ inches (21 cm) in length and 3 ½ inches (6 cm) in width (measured at the middle).

Crochet gauge swatch for hexagon dress showing stitch tension and measurement

The Stitch & Technique Explained

Start this crochet hexagon dress with a foundation chain, then work Round 1 in double crochet, forming two corners on one end and four on the other.

Once the hexagon structure is set in Round 1, all following rows are worked in granny stitch clusters. Here’s a stitch diagram to help visualize it:

Crochet hexagon dress stitch chart showing granny stitch pattern and extended hexagon construction — Crochet hexagon dress stitch diagram

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Hexagon Summer Dress Instructions

Note about the yarn: This crochet hexagon dress sample uses fine (2)/sport yarn. Tips for thicker yarn are included in the FAQ section above with tips (see “Can I use thicker yarn?”). But you’ll need to make your own adjustments to the number of rounds/rows.

Foundation:

Start with a Slip Knot then ch 79 (75, 71) – these are multiples of 4 plus 3. Yes, the smaller sizes start with more chains! The reason is that we need to offset the dress’s length, since we’re crocheting fewer rounds to reach the appropriate armhole depth.

Round 1 (RS):

*(Dc 3, ch 1) 3x, dc 3* in 5th ch from hook, dc in 3rd loop of each ch until 1 ch rem, *(dc 3, ch 1) 2x, dc 3* into last ch. Do not turn. We’re now crocheting the 2nd half of round 1 on the opposite two loops of the same chs: dc in each ch across, dc 3 in the same 5^th ch as the first dc cluster, sl st into the initial ch-4 sp.

Round 2 (RS):

Ch 4 (doesn’t count as a dc, count as a ch 1 sp, here and throughout the pattern), dc 3 in 1st ch 4 sp, sk one dc cluster, (dc 3, ch 1, dc 3) in next ch 1 sp 3x, *sk 3 dc sts, dc 3 in next st*, rep bet *…* to next ch 1 sp, (dc 3, ch 1, dc 3) in next ch 1 sp 2x, *sk 3 dc sts, dc 3 in next st*, rep bet *…* to last, dc 3 in 1st ch 1 sp, sl st into the initial ch 4 sp.

Maggie’s Pro Tip: If you’re wondering, when you crochet granny stitch squares and hexagons with the join placed in one corner, it creates a clean, seamless finish for your crochet hexagon dress.

Round 3 (RS):

Ch 4, dc 3 in 1st ch 4 sp, *dc 3 in sp bet next 2 clusters, (dc 3, ch 1, dc 3) in next ch 1 sp, rep from the * 2 more times, dc 3 in sp bet next 2 clusters to next ch 1 sp, (dc 3, ch 1, dc 3) in next ch 1 sp, dc 3 in sp bet next 2 clusters, (dc 3, ch 1, dc 3) in next ch 1 sp, dc 3 in each sp bet next 2 clusters to last, dc 3 in 1st ch 1 sp, sl st into the initial ch 4 sp.

Foundation chain and rounds 1-3 of the hexagon dress pattern — crochet hexagon dress foundation + rows 1-3

From here, we’re calling every ch 1 sp a corner.

Round 4-18 (20, 23) (RS):

ch 4, dc 3 in 1st ch 4 sp, *cluster in each sp bet next 2 clusters to next corner, (dc 3, ch 1, dc 3) in next ch 1 sp* rep bet the * 2 more times, **cluster in sp bet next 2 clusters to next corner, (dc 3, ch 1, dc 3) in next corner**, rep bet the ** one more time, cluster in each sp bet next 2 clusters to last, dc 3 in 1st corner, sl st into the initial ch 4 sp.

Maggie’s Pro Tip on Armhole Sizing: You can adjust the armhole depth in this crochet hexagon dress by adding or removing rounds of the core hexagon. Now is a good time to do this, just remember that it will also increase the length of the sleeves and the dress.

When you reach the desired armhole depth, stop doing full rounds to prevent the armhole depth and sleeve length from becoming too large. If following the pattern as is, just keep following the instructions below.

Turning Rows:

We’re now turning rows on corners #1 and #4 instead of going around.

Row 19 (21, 24):

Ch 3 and turn, *cluster in each sp bet next 2 clusters to next corner, (dc 3, ch 1, dc 3) in next corner, rep from the * 1 more time, cluster in each sp bet next 2 clusters to next corner, dc into next corner, ch 3 and turn.

Row 20 (22, 25):

Dc 3 into the sp bet the 1^st dc and next cluster, *cluster in each sp bet next 2 clusters to next corner, (dc 3, ch 1, dc 3) in next corner, rep from the * 1 more time, cluster in each sp bet next 2 clusters until 1 sp rem, dc 4 in last sp, ch 3 and turn.

Row 21-24 (23-28, 26-32):

Rep the instructions in the previous two rows. When you finish the first hexagon, make the second one using the same instructions above. At the end, FO using the Invisible Finish.

Maggie’s Pro Tip on Hip/Bust Sizing: Hip and bust sizes for your crochet hexagon dress can be adjusted by adding or removing partial rows. Just keep in mind that this also increases the dress’s length.

Completed hexagon ready to be joined to its pair to assemble the dress — crochet hexagon dress spread panel

Assembling the Dress

Pinch corners 1 and 4 together, then align the back edges of the hexagons together with the right sides facing out. Thread a tapestry needle with the same yarn used for the dress and sew along the back edges using the mattress stitch or your preferred sewing method. Cut the yarn, FO.

Note: both sides in this crochet hexagon dress pattern are identical, so it doesn’t matter which is the front and which is the back.

Maggie’s Pro Tip on Sewing: The mattress stitch looks better when worked on the right side because it forms a seam on the back side.

Sew the Back and the Front

Thread the needle with a new strand of yarn and sew the front the same way you did the back, leaving approximately 8 inches (20 cm) or 11 clusters for the placket. Cut the yarn and fasten off.

Two completed hexagons laying flat, side by side, ready to be sewn together — Sewing line for the crochet hexagon dress

Sew the shoulders

With stitch markers or sewing pins, mark the edges of the collar well centered. Leave a 9-inch (22.5 cm) opening for the collar. Then, sew the shoulders, one at a time, to the stitch marker. Cut the yarn and fasten off.

Creating the Cuffs

Crochet the cuffs using the 3.25 mm (D) hook, one at a time. Begin by attaching the yarn to any stitch and sc in each st around without joining. Then continue working with sc in continuous rounds for 4 rounds. Cut the yarn and fasten off.

Crocheting fitted cuffs on hexagon dress sleeves

Crocheting the Placket Closure

Switch back to the 3.75 mm (F) hook. If you’re not familiar with the sewing term “placket,” it refers to the short, buttoned-down opening used in polo shirts. I used the “popover” style placket, which consists of two strips: one goes underneath with the buttons, and the other goes on top with the buttonholes.

Maggie’s Pro Tip: The stitches for the placket in this crochet hexagon dress shouldn’t be too tight. If you crochet tightly, consider using a larger hook. We’re also using sc sts for the plackets, but in turning rows.

Bottom Placket:

For the placket strip underneath where the buttons go, you can either crochet it separately and sew it on or attach the yarn four rows down on the right side of the dress, where the front opening begins.

Row 1: sc in each dc st to last, ch 1, turn. [33 sc sts]
Row 2-6: sc in each sc across, ch 1, turn. [33 sc sts]
Row 7: sc across using the two layers of sts in row 6 and the sts on the dress opening edge. Cut the yarn and fasten off.

Crocheting the bottom placket for hexagon dress button closure — Attach the yarn here

Front Placket:

For the top strip, attach the yarn to the first stitch of the front opening on the opposite edge.

Row 1: sc in each dc st to last, ch 1, turn. [33 sc sts]
Row 2-3: sc in each sc across, ch 1, turn. [33 sc sts]
Row 4: We are creating the buttonholes. **Sc 7, ch 1, sk 1 ch** x3, sc 6, ch1, sk 1 st, sc in the last st, ch 1, turn.
Row 5: sc in each sc and in each ch across, ch 1, turn. [33 sc sts]
Row 6-7: sc in each sc across, ch 1, turn. [33 sc sts]

Cut the yarn and leave a long tail. Thread a needle with the tail and sew the bottom of the placket to the bottom layers. Fasten off.

Crocheting the front placket for hexagon dress buttonholes — Attach the yarn on the opposite side

Finish the buttonholes

Thread the tapestry needle with a new strand of matching yarn and sew around the buttonholes to keep them tidy. Then use the sewing needle and thread to attach the buttons to match their corresponding buttonholes.

Stitching the buttonholes on the crochet dress front placket

Polo-Style Collar

Crochet the collar with the 3.25 mm (D) hook – the tighter stitches will make it sturdier.

Row 1: Attach the yarn in the first horizontal stitch post past the edge of the placket. Then, sc across to the other end, right before the other placket. Crochet 3 sc sts for each horizontal bar/post and one st for each regular stitch, ch 1, turn.

Row 2-20: sc in each sc across, ch 1, turn. Cut the yarn and fasten off when finished.

Attaching the yarn to start the polo-style collar for the hexagon dress.

Crochet polo-style collar with single crochet stitches

Dress length and finishing touches

You might need to add more rounds of granny clusters to the bottom of the crochet hexagon dress. Here’s how to do it:

Round 1: with the RS out, attach the yarn into any space between clusters and ch 3 (counts as a dc st here and throughout), dc 2 in the same st as ch 3, *dc 3 in the next sp between the next two clusters, repeat from the asterisk around, sl st to join.

Round 2-5: sl st into the next two dc sts, ch 3, dc 2 in the same st as ch 3, *dc 3 in the next sp between the next two clusters, repeat from the asterisk around, sl st to join. Add extra rows if needed.

Showing the details of the extra rows added to increase the lenguth of the dress.

Finish your crochet hexagon dress by weaving in all the loose ends, then press the collar and cuffs with a hot steam iron to flatten them.

Side angle crochet hexagon dress with bright multicolor stripes and short sleeves

FAQ’s About Extended Hexagon Dresses:

How does the extended hexagon technique work?

The extended hexagon technique is a variation of the classic crochet hexagon in which two sides are lengthened with additional chains. Instead of a standard shape, these extensions create an “L” shape when folded, giving you better control over the garment’s length and sleeve width for a more tailored fit.
Is this dress worked in one piece?

The dress is made by crocheting two identical hexagons, then adding turning rows to three of the sides to increase bust, hip, and length. We then sew the shoulders, front, and back to assemble the final garment.
Can I use worsted-weight (4) yarn for this Hexi dress?

Absolutely! My crochet hexagon dress sample uses fine/sport (2) yarn, but you can use worsted-weight with a 5 mm (H) hook and a 51-chain foundation. After Round 1, your piece should measure about 16 ¾ inches (43 cm) long, then continue as written in the pattern.
Is it easy to customize the size of the dress?

Yes – depending on your skill level. Crochet the core hexagons to your desired armhole depth, then add turning rows to adjust the bust, hips, and length. I’ve included helpful tips throughout the pattern to guide you.
Do I need to block the dress?

Blocking is optional but recommended. Light steaming or a hot iron, especially on the collar and cuffs, helps give the dress a clean and polished finish.

Final Thoughts

Whether you’re marking your dress to wear as a breezy summer garment or to throw it over your swimsuit, I hope you love the finished result. I can’t wait to see your versions—don’t forget to share and tag me so I can check them out and enjoy your beautiful creations!

More Summer Clothing Patterns

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