Bensimon flaunted her fierce figure in a black bikini in Miami.
The Real Housewives of New York City star didn't look very happy in the pool.
Bensimon showed off her athletic curves in the stylish swim suit.
Did Frankel rock the two-piece better?
Frankel opted for the beach instead of the pool in her orange bikini.
Bethenny Frankel in a bright fucsia bikini in Miami Beach
Frankel and Bensimon have famously battled over the years, on and off screen, with an epic meltdown between the two on their Caribbean vacation. So who do you think has the best bikini body? Sound off in comments below!