This is an original design from my new book Summer Crochet: 19 Delicate Designs with Simple Lace and Timeless Silhouettes, first published in 2025 by Page Street Publishing.

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MY BOOK: SUMMER CROCHET

Enter your beachy crochet era with lightweight, breathable patterns perfect for poolside lounging, festival weekends and sun-soaked vacations. 

This book includes 19 #SizeInclusive, warm-weather garment and accessory patterns using a variety of techniques and construction methods to ensure there is something of value for every skill level. Each garment pattern is written with an inclusive size range from XS to 5XL and each size has been thoroughly tested, thoroughly tech edited, and fully charted! We had hundreds of crochet pattern testers for this book to make sure that each size fits its intended wearer in a way that makes them feel beautiful.

Shop my new book, Summer Crochet, here or wherever you buy your books!

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ABOUT

Meet your new favorite swimsuit topper! The Siren Side-Slit Dress is a figure-hugging beach dress designed for day trips to the ocean. Featuring an enchanting mermaid-like stitch pattern and a high leg slit for ease of collecting seashells along the shoreline, this stretchy dress will have you feeling cute, covered and comfortable.

This pattern is fully written and charted.

MATERIALS

Yarn: DK—Lion Brand 24/7 Cotton DK in colorway “Cream”

• 100% cotton
• 273 yds (250 m) per 3.5 oz (100 g) skein
• Find this yarn on lionbrand.com or yarnsub.com to find comparable substitutes available in your region.

Yardage Required:

• 4 (4, 4, 4, 5) (5, 6, 6, 6) skeins, or approximately
• 850 (900, 975, 1050, 1175) (1225, 1375, 1475, 1550) yds
• 777 (823, 892, 960, 1074) (1120, 1257, 1349, 1417 m

Yarn Substitution: Visit knitsnknots.ca/siren-side-slit-dress for an extensive list of yarn substitutes and yarns used during pattern testing. Substitute Lion Brand 24/7 Cotton DK with any similar light DK-weight (category #3) yarn that matches gauge. Most fibers should work fine in this project, particularly cotton or cotton blends. Avoid 100% bamboo yarns, as these will be too slippery; a little grip is needed. Note that DK weight is sometimes referred to as “8-ply” in Australia.

Hook: Size U.S. E/4 (3.5 mm) or size needed to obtain gauge

Notions: Tapestry needle, 3 locking stitch markers, several more stitch markers (optional) to help with seaming

GAUGE

See full swatch information written out at knitsnknots.ca/siren-side-slit-dress.

SIZING + FINISHED MEASUREMENTS

See Ravelry photos for full page of sizing/measurement information.

TERMS + ABBREVIATIONS

Written in U.S. Crochet Terms
BOR: beginning of round
ch(s): chain(s)
ch-sp(s): chain space(s)
dc: double crochet (tr in U.K. terms)
PM: place marker
rep: repeat
rnd(s): round(s)
RS: right side
sc: single crochet (dc in U.K. terms)
scBLO: single crochet through the back loop only (dcBLO in U.K. terms)
sc2togBLO: single crochet 2 stitches together through the back loops only (dc2togBLO in U.K. terms)
sk: skip
sl st(s): slip stitch(es)
st(s): stitch(es)
tr: treble crochet (dtr in U.K. terms)
WS: wrong side

Special Stitches
Shell: work 7 double crochets into designated stitch or space (in U.K. terms this means to work 7 treble crochets into designated stitch)

PATTERN NOTES

Skill Level: Intermediate

Sizing: This dress is written in nine sizes as follows: XS (S, M, L, XL) (2X, 3X, 4X, 5X). Make sure to follow the numbers for your size only. An “x” indicates the instruction is not applicable to your size.

Stitch Counts: Stitch counts are listed after each row/round. If no stitch count is given, there has been no change since the previous row/round. If only one number is provided, it applies to all sizes.

Right Side/Wrong Side: There is a right side (RS) and wrong side (WS) to this fabric. The RS faces you as you crochet all even-numbered rows (the Shell rows).

Turning Chain: The turning chain does not count as a stitch.

Lacy Fabric: Note that this stitch pattern has a lot of stretch due to the mesh ch5-sps. It is normal for your dress to appear quite small as you are crocheting it. This fabric has the capability of stretching nicely to fit your bust and hip measurements.

Armholes: As you crochet your panels, the armholes may seem quite large. This will change once your armhole border is worked; the border rounds worked later on will cinch them in perfectly.

Construction: This dress is worked side-to-side, lengthwise, in two panels (front and back) that get seamed together, then a simple border is added to the neckline and each armhole.

More Content: For more information and tester photos, visit knitsnknots.ca/siren-side-slit-dress.

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Shop my first book, Modern Crochet Sweaters, here or wherever you buy your books!

Shop my second book, Summer Crochet, here or wherever you buy your books!

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