Cleavage-Enhancing Seaside Bikini Top - Onyx Black Ribbed

Made for small busts (AA–B cups)

The Seaside Top is our signature cleavage-enhancing triangle bikini top designed exclusively for small busts. Featuring our proprietary CupUp™ booster technology, this style creates natural lift, centered definition, and the effortless “brought-together” shape the IBTC loves.

Unlike traditional swim padding, our lightweight silicone boosters are sewn in — no shifting pads, no gaps, no inserts, just sculpting that feels like you… but boosted. CupUp™ enhances the look of up to 2 cup sizes depending on your natural volume and rib cage shape.

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How it fits

• Runs snug in the cups (intentional — the snugness activates CupUp™ lift)

• Adjustable straps + fixed band

• Best for AAA–B cups, petite frames, and anyone wanting extra definition

• If you’re between sizes → size UP

• Expect a lifted, rounded, cleavage-forward look

CupUp™ may feel slightly more structured when you hold it, but once on your body, it feels lightweight, secure, and incredibly natural.

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Who it’s perfect for

• Petite chests looking for natural cleavage

• AA, A, and B cups wanting more shape without padding

• Narrow rib cages needing a sculpted, supportive feel

• Anyone who’s never found a triangle top that actually fits a small bust

• Small-bust shoppers wanting a triangle top that stays put and doesn’t gape

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Why small-bust shoppers love it

• Creates lift without gaping

• Helps breasts sit centered and rounder

• Stays in place thanks to the snug, supportive CupUp™ design

• Booster technology mimics the look of a subtle push-up bra

• Designed so small chests don’t “slide around” in the cups

• Adds up to 2 cup sizes of natural-looking enhancement

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Sizing Notes

• XS: AAA–A cups

• S: AA–A cups

• M: A–B cups

• L: B–C cups

If you are between S and M, choose:

• M for a softer, more relaxed feel

• S for more visible lift and cleavage