This crochet pattern is an original design from my book Summer Crochet: 19 Delicate Designs with Simple Lace and Timeless Silhouettes, first published in 2025 by Page Street Publishing.
Summer Crochet can be found wherever you buy your books, or at these retailers.
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 + charted.
More Content: For more information and tester photos, visit knitsnknots.ca/siren-side-slit-dress.
MATERIALS
Yarn: DK—Lion Brand 24/7 Cotton DK in colorway “Cream”
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100% cotton
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273 yds (250 m) per 3.5 oz (100 g) skein
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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 gauge swatch information fully written out at knitsnknots.ca/siren-side-slit-dress.
SIZING + FINISHED MEASUREMENTS
See listing photos for full sizing chart and finished measurements.
TERMS + ABBREVIATIONS USED
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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WHAT YOU WILL RECEIVE:
Immediately after purchase, you will instantly receive a digital download of the PDF pattern. Please include your email when prompted (be sure it's spelled correctly). Please send me an email if you don’t receive the download link!
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Email: knitsnknotswpg@gmail.com
Books: Modern Crochet Sweaters | Summer Crochet
© 2025 KnitsNKnots, Designed by Janine Myska.
