Bikini Crochet Bookmark Pattern: A Playful Summer Book Band

This free bikini crochet bookmark pattern gives your current read a little vacation outfit. A purple triangle, sunny yellow trim, and a tiny bow create a playful bikini-bottom design on the outside of your book.

The bookmark uses a narrow crochet loop that slips around the front cover and the pages you have already read. The back section of the loop sits at your reading place, while the decorative triangle stays outside.

This original Cute Stitch Studio version is suitable for adventurous beginners who know single crochet. You will make one shaped triangle, a band measured to your book, and a small decorative bow.

Bikini Crochet Bookmark Pattern: A Playful Summer Book Band Instructions

Why You’ll Love This Bikini Crochet Bookmark Pattern: A Playful Summer Book Band

• Clear step-by-step sections make the project easier to follow.
• Materials, sizing, finishing, and customization notes are easy to find.
• The pattern includes practical tips for a neat handmade result.

Project Details

• Skill level: Adventurous beginner.
• Estimated time: Approximately 2–3 hours.
• Finished triangle: Approximately 6 inches (15 cm) along the straight base and 3¼ inches (8 cm) from base to point, before edging.
• Band size: Made to fit your chosen book.
• Crochet terminology: US terms.
• Construction: Flat triangle sewn to a narrow crochet loop, with picot edging and an attached bow.

This is an original pattern draft, not a reconstruction of another maker’s instructions. It has not been physically tested. Measurements and yarn quantities are estimates; use the fitting checks throughout.

Materials for the Bikini Crochet Bookmark Pattern

• Category 2 fine-weight cotton yarn: approximately 55–75 yards (50–69 m) in purple.
• The same yarn: approximately 25–35 yards (23–32 m) in yellow.
• 3 mm crochet hook, or a size that gives the suggested gauge.
• Yarn needle.
• Scissors.
• Measuring tape.
• Your chosen paperback book.

No elastic, buttons, beads, or purchased ribbon are required.

Hook Size

Start with a 3 mm crochet hook. The fabric should be neat and flexible rather than stiff.

If your swatch is too small, try a larger hook. If it is too large, try a smaller hook. A bulky or unusually tight fabric can make the band uncomfortable between pages.

Yarn

Use smooth category 2 fine-weight cotton yarn for both colors. Cotton gives the triangle a clear outline and makes the little yellow picots easy to see.

The sample color scheme is lavender purple with lemon-yellow edging. Coral and cream, turquoise and white, or pink and cherry red are equally cheerful combinations.

Keep both colors the same thickness. A much heavier edging yarn can distort the triangle and make the band curl.

Gauge and Book Measurements

Suggested gauge: 24 sc and 24 rows = 4 inches (10 cm), measured without stretching.

At this gauge, the untrimmed triangle has a 6-inch (15 cm) base. Choose a book at least 7 inches (18 cm) tall and approximately 4½ inches (11.5 cm) wide so the decoration can sit comfortably on the cover.

The band length is measured directly around your book. Because page count and cover thickness vary, this bikini crochet bookmark pattern does not use one fixed loop length.

Measure the Band Path

Open the book at a page you want to mark. Hold the front cover and the pages before that point together.

Wrap the measuring tape vertically around that cover-and-page section: down the outside of the front cover, around the bottom edge, up the selected inside page, and over the top edge.

Allow approximately ½ inch (1.3 cm) of extra room so the loop slides on without pulling the cover. Record this as your target band circumference.

For example, a measured path of 16 inches needs a finished loop of approximately 16½ inches (42 cm). Your own measurement takes priority.

Abbreviations

• ch: chain.
• sc: single crochet.
• sc2tog: single crochet two stitches together.
• sl st: slip stitch.
• st / sts: stitch / stitches.

To work sc2tog: Insert your hook into the next stitch and pull up a loop. Insert it into the following stitch and pull up another loop. Yarn over and pull through all three loops. Two stitches become one.

To make a picot: Ch 3, then sl st into the first of those three chains. This forms a small decorative loop. The picot does not count as an additional stitch in the underlying edge.

Before You Start

• Work the triangle and band in rows.
• Ch 1 at the beginning of a row does not count as a stitch.
• Turn after each row unless told otherwise.
• Work through both top loops of the stitches.
• Each triangle decrease row removes two stitches: one at each end.
• The triangle’s wide starting edge is sewn vertically to the band. Its point faces toward the outer edge of the book.
• Keep the triangle and bow on the outside of the cover.

This is a decorative book band, so the inside strip will be thicker than a paper bookmark. Use it loosely on an everyday paperback, and avoid forcing it into a delicate or tightly bound book.

Bikini Crochet Bookmark Pattern: Step-by-Step Instructions

Part 1 — Make the Purple Triangle

Using purple, ch 37.

Row 1: Sc in the second ch from the hook and each remaining ch. Turn. (36 sts)

Row 2: Ch 1, sc2tog, sc in each st until two sts remain, sc2tog. Turn. (34 sts)

Rows 3–18: Repeat Row 2, decreasing once at each end of every row.

Row	Stitch Count
3	32
4	30
5	28
6	26
7	24
8	22
9	20
10	18
11	16
12	14
13	12
14	10
15	8
16	6
17	4
18	2

Row 19: Ch 1, sc2tog. (1 st)

Fasten off. Lay the triangle flat and check that both sloping sides are similar. The straight starting edge will become the vertical side nearest the book’s spine.

Part 2 — Add Yellow Picot Trim

Place the triangle with its wide starting edge on the left and its point facing right.

Join yellow at the upper end of the wide starting edge. You will work along the upper slope, around the point, and back along the lower slope. Leave the wide starting edge untrimmed for sewing.

Edging Row: Ch 1. Work 1 sc into the end of each of Rows 1–18 along the first slope. After every third sc, make one picot. (18 sc and 6 picots)

Work 3 sc into the single stitch at the tip, making one picot after the second of these three sc.

Work 1 sc into each of the 18 row ends along the second slope. After every third sc on this slope, make one picot. (18 sc and 6 picots)

Fasten off. The complete edging contains 39 sc and 13 picots.

Keep the edge relaxed. If it pulls the triangle inward, loosen the edging stitches rather than stretching the triangle into shape.

Part 3 — Crochet the Book Band

Using purple, ch 4.

Row 1: Sc in the second ch from the hook and each remaining ch. Turn. (3 sts)

Row 2: Ch 1, sc across. Turn. (3 sts)

Rows 3 onward: Repeat Row 2 until the strip reaches your recorded target circumference without stretching.

At the suggested row gauge, each inch requires approximately six rows. A 16½-inch strip would therefore need about 99 rows, but measure the actual strip instead of relying only on this estimate.

Fasten off, leaving a 12-inch (30 cm) sewing tail. Do not join the ends yet.

Part 4 — Trim the Front Section of the Band

Fold the strip in half to locate its midpoint. Center the triangle’s wide edge along one long edge of the strip, with the triangle and strip midpoints aligned.

This central section will sit outside the front cover. The two ends of the strip will meet on the inside.

Using yellow, edge the opposite long edge of the band for a centered 6-inch section, matching the length of the triangle’s base.

Band Edging: Join yellow at the beginning of that section. Ch 1, work 1 sc into each row end across the section, making one picot after every third sc. Fasten off.

At the stated gauge, this section spans approximately 36 row ends and produces 12 picots. If your row gauge differs, match the triangle’s actual base length.

Leave the remainder of the band untrimmed. Keeping picots off the inside section reduces bulk between the pages.

Part 5 — Attach the Triangle and Close the Loop

Place the triangle’s untrimmed base beside the untrimmed long edge of the band, centered opposite the yellow band edging.

Using purple yarn, sew the base to the band with small whipstitches. Pass through each foundation-chain position on the triangle and the corresponding row end on the band, easing the pieces together without gathering.

The base has 36 chain positions. At the suggested gauge, it aligns with approximately 36 band row ends.

Wrap the band around the front cover and selected pages again. Confirm that the triangle sits outside and the ends meet loosely on the inside page.

Bring the two short ends together without twisting. Use the reserved purple tail to sew the three stitches of one end to the three positions on the other end. Join edge to edge rather than overlapping to keep the seam flatter.

Part 6 — Make the Yellow Bow

Using yellow, make a chain approximately 9 inches (23 cm) long. Fasten off and weave in the two ends.

Tie the chain into a small bow with two similar loops. Place it on the triangle near the wide base, approximately halfway between the top and bottom corners.

Using a separate strand of yellow yarn, sew through the center of the bow and the triangle several times. Catch the bases of both loops so the bow does not easily slide loose. Secure and weave in the sewing ends on the back of the triangle.

Finishing

Weave in all remaining tails through the backs of nearby stitches. Keep them away from the inner band surface where they could catch a page.

Gently shape the triangle and straighten the picots. If needed, dampen the piece according to the yarn label, lay it flat, and let it dry completely before placing it on a book.

Check the band seam, triangle attachment, and bow. The loop should slide over the selected cover-and-page section without bending the cover.

Finished Size

• Triangle before trim: Approximately 6 inches (15 cm) along the base and 3¼ inches (8 cm) from base to point.
• Plain band width: Approximately ½ inch (1.3 cm).
• Band circumference: Your measured book path plus approximately ½ inch (1.3 cm) of room.
• Example circumference: Approximately 16½ inches (42 cm).

The picot trim adds a little width around the decorative section. All measurements are approximate and depend on your yarn and tension.

How to Use Your Crochet Bookmark

Open your book at the page you want to mark. Slip the loop around the front cover and the pages before that point, keeping the plain return section on the selected inside page.

Position the decorated section vertically near the spine on the outside cover. The triangle points across the cover, with the bow facing outward.

As you read, reposition the loop around the updated group of pages. If it becomes tight as the page stack grows, remove it rather than stretching it over the cover. A longer band may be needed for a substantially thicker section.

Tips and Customization

Choose a Summer Color Pair

Lavender and yellow give this bikini crochet bookmark pattern a bright vacation feel. Try sea blue with white trim or peach with mint for a softer version.

Adjust the Band for Another Book

Measure each book separately. Two books of the same height may need different loop lengths because their covers and page stacks differ in thickness.

Make a Smaller Triangle

For a smaller decoration, ch 31 and work 30 sc in Row 1. Decrease at both ends through Row 15 to reach 2 stitches, then work sc2tog in Row 16.

This produces an approximately 5-inch (12.5 cm) base at the same gauge. Edge 15 row ends on each slope, plus 3 sc at the tip, and shorten the band’s decorative edging to match the new base length.

Turn It into a Book-Lover Gift

Pair the finished bookmark with a paperback and a handwritten note. Keep the loop easy to remove so the recipient can transfer it to another book or adjust the band length later.

Frequently Asked Questions

Is this bikini crochet bookmark pattern beginner-friendly?

It is suitable for beginners who already know single crochet. The main new skills are decreasing at both ends of a row, making picots, and sewing two flat pieces together.

Does the triangle go between the pages?

No. The triangle, decorative trim, and bow stay outside the front cover. Only the narrow plain section of the band sits at your reading place.

Can I use thicker yarn?

Thicker yarn makes a larger triangle and a bulkier band. Fine cotton is a better match for the proportions and relatively slim inside strip used here.

Will one band fit every book?

No. The loop is measured for a particular book and page stack. A loose fit offers some flexibility, but a much taller or thicker book will need a different band length.

Save this bikini crochet bookmark pattern to your handmade gift board for your next book-club exchange or summer reading project.

Project Checklist

• Confirm your yarn weight, hook size, and gauge before beginning.
• Read through the full Bikini Crochet Bookmark Pattern: A Playful Summer Book Band instructions once before you start.
• Check stitch counts at the end of each row or round before continuing.
• Review the finishing and sizing notes before weaving in the final ends.

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