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Three Sisters Bikinis


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Three Sisters Bikini Pattern by Pin Up Girls

Pin-Up Girls is proud to present the Three Sisters Bikini Pattern collection, for fun and sun with a choice of 3 unique tops and bottoms.

All tops include an interior underwired bra, made from swim cup foam. The unique criss-cross back allows the bikini top to fit multiple sizes. The straps include elastic sewn directly to the inside seam, therefore, it will never roll or twist. All bottoms include a high-cut waist with a doubled fabric waistband and a centre back seam, for shapely results. The bikini bra tops all use underwires, and the pattern fits a variety of bra cup sizes, due to our unique method of sizing.


The bottoms fit hip sizes 35-47″(89-119.5 cm)
The tops are sized according to Pin-up Girls unique method of measuring. Simply measure the cross cup (from the wire line on one side, over the bust point and to the wire line on the other side) That measurement when converted using the sizing chart, gives you the right fit in the bust, the first time.

Pattern Styles:

Violet – vertical seamed bra top and bottoms, button trim at the waist.
Rebecca – uses a tie to gather the front of the top, bottoms include a ruched front panel.
Marsha – top includes a twisted knot effect, bottoms include mini twists at the side front.

Materials Required:

.5 m (½ yd) of spandex blend swimsuit fabric with stretch in both the lengthwise and the crosswise direction
.5 metres (½ yd) of 100% nylon swimsuit lining
.3 metres (⅓ yd) of chlorine resistant swim cup foam or pre-finished foam, or cut & sew foam
4 metres (4 ½ yd) of ⅜” (9 mm) swimsuit elastic such as Filpar
A piece of stabilized fabric  8″ x 8″ for the bra side frame and the bridge
.8 m (¾ yd) of channeling (wire casing)
2 rings 1/2″ (12 mm) or larger for the strap attachment
.5 m (½ yd) or less of stay tape to stabilize the neckline edge
4 buttons ¾” (18 mm) in diameter (for Violet bottoms only)
1 pair of underwires in the  size indicated

Additional information

Pattern Category


Designed For