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.

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.

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

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

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

Model measurements:

Model	Size
Size on Model	XS
Height	5'7
Bust	30A
Waist	26"
Hips	34" (wears size small in classic bottoms)

By The Shore Collection 🐚 🌊

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