Xposure/AKM-GSI
September 14, 2016

In case you had any doubts, Kourtney Kardashian's latest outing proved once again that she is obsessed with one-piece swimsuits—and that she looks very good in them.

The mother of three was spotted having some fun in the sun at the beach in Miami today, where she turned up the heat and showed off her super fit physique in a plunging yellow number that featured a halter neckline and super low back. The 37-year-old paired the vibrant bathing suit with colorful mirrored sunglasses and two gold Cartier bangle bracelets. Kardashian slicked back her long brunette strands as she took a dip in the cool ocean water.

The Keeping Up with the Kardashians star was joined on the excursion by her baby daddy Scott Disick along with their kids Mason, 6, Penelope, 4, and Reign, 1. Later on in the day, Khloé Kardashian showed up to join in on the family's late summer getaway.

RELATED: Kourtney Kardashian Hits Up Walt Disney World in a Chanel Fanny Pack

See more celebrities rocking swimwear in our gallery now.