The 26-year-old slipped into a zippered version of the classic one piece swimsuit while filming the Baywatch movie in Miami Beach on Friday.
The actress is playing C.J. Parker in the remake of the hit nineties series, following in the footsteps of Pamela.
Kelly stunned in the bold crimson hued bathing suit, which featured a gold zipper detail in the center and the word ‘lifeguard’ emblazoned in white on the back.
The Baywatch remake began filming end of February, with a release date set for May 19, 2017.