Ipswich Swimsuit Pattern (up to 58 hip)
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Ipswich Swimsuit Pattern (up to 58" hip)

Soak up the sun in the Ipswich Swimsuit, an underwired swimsuit sewing pattern designed for big boobs in cup sizes C–H!

This modern pattern has two cleverly color-blocked variations: a one-piece swimsuit with a contrast waistband or a high-waisted bikini with piping detail. Both suits feature supportive straps, and an optional underwired foam swim bra and boning, so that you're comfortable lounging by the pool or playing volleyball on your favorite beach. Mix prints and colors for a swimsuit that celebrates your body and your creativity, and keeps you feeling secure all summer long.

This Cashmerette pattern includes:

  • Cup sizes from C to H
  • sizing calculator which will tell you exactly which size to make
  • A beautifully illustrated and detailed instruction booklet, to guide you no matter your sewing level

Want step-by-step help making your Ipswich? Check out our online workshop “Swimsuit Making for Curves” where Jenny Rushmore will take you through the whole process with confidence!

Interested in making a tankini version of the Ipswich Swimsuit? A free expansion pack is available here

SEWING LEVEL

Intermediate

SIZING

12to 32 (PDF pattern), 12 to 28 (printed pattern), in three cup sizes (C/D, E/F, G/H). Includes 40-62” bust and 42-62” hip. Find your size in seconds using our size calculator.

RECOMMENDED FABRIC

Swimsuit lycra/spandex, with 4-way stretch (at least 50% in both directions), swimsuit lining with 4-way stretch (at least 50% in both directional), optional contrast swimsuit/spandex for piping (View B). 

NOTIONS

All Views

  • Stretch needle, polyester thread

View A (One-piece)

  • 5 yards (4.5 m) of ¼” – ?” (0.6 – 1 cm) rubber/swimwear elastic
  • 2 yards (1.8 m) of ½” – ?” (1.25 – 1.5 cm) bra strapping (or firm elastic)
  • 1 swimwear closure or S Hook (1” / 2.5 cm)

View B (Bikini)

  • 6 yards (5.5 m) of ¼” –?” (0.6 – 1 cm) rubber/swimwear elastic
  • 2 yards (1.8 m) of ½” – ?” (1.25 – 1.5 cm) bra strapping (or firm elastic)
  • 2 swimwear closures or S Hooks (1” / 2.5 cm)

Optional Swim Bra

  • 1 yard (0.9 m) of ?” (1.5 cm) wide Fold Over Elastic
  • 1 yard (0.9 m) of ¼” (6 mm) stay tape
  • ? yard (35 cm) swim cup foam (45” / 115 cm wide)
  • ¼ yd (15 cm) of stable bra lining, like Duoplex (45” / 115 cm wide)
  • ? yard (35 cm) of power mesh (45” / 115 cm wide)
  • 1 yard (0.9 m) of underwire channeling
  • 1 set of regular length underwires (coated steel or plastic)

Optional boning: 

  • ? yard (28 cm) of pre-covered ¼” (6 mm) plastic boning, or ? yard (28 cm) plastic boning plus ? yard (28 cm) channeling.

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