“The Hills” star cools off in Miami Beach in a teeny weeny ruffled bikini.
(Photo: Pacific Coast News)

Minka Kelly, Christina Milian, Rumer Willis and Kristin shake their groove
thing for an OP Campaign in Santa Monica.
(Photo: Getty / Wire Image)

Kristin shows off her toned abs in a pink halter bikini in Malibu.
(Photo: StarTraks)

The former “Laguna Beach” star proves she’s always camera ready in a tiny
two-piece in Beverly Hills.(Photo: StarTraks)

Kristin soaks up the California sun at the Polaroid Beach House in Malibu.(Photo: FAME Pictures)

Kristin shows off her bikini body while taking her pooch, Rocco, for a walk
in Malibu.(Photo: Pacific Coast News)

If we looked like Kristin in a bikini, we’d be laughing too!
(Photo: Splash News)

The water might be cold, but Kristin sizzles in this black two-piece!
(Photo: Splash News)