Women's Triangle Top Swimsuits: Shop by Style, Detail & Fit

The triangle top — two fabric triangles on strings — is the archetypal bikini top: minimal, adjustable, endlessly imitated. Its genius is simplicity; its limitation is support.

Triangle tops flatter small to medium busts most naturally, creating a classic beach silhouette with minimal tan lines. The sliding triangles adjust to coverage preferences and body changes — slide them wider for more coverage, narrower for less. For larger busts, look for triangle styles with structure: underwire triangles, molded triangle cups, or tie-front halters that borrow the look with real engineering underneath.

Making It Work

Fit lives in the ties: the neck tie controls lift, the back tie controls band snugness. Both should be secure without strangling — red marks mean too tight, slipping means too loose. Lined triangles only; unlined triangle fabric is a transparency incident waiting for water.

Beyond the Beach

Triangle tops double as festival and summer tops under open shirts — buy colors that work with your warm-weather wardrobe, not just your swim bottoms.