The 20-year-old struggled to contain her ample assets in a yellow frilly bikini top as she frolicked in the sea with a mystery man.
She dated pop sensation Justin Bieber in 2014 and Yovanna Ventura showed just what caught his eye when she hit the beach in St Barts on Saturday.
She teamed the sexy number with a black thong which showed off her flawless posterior as she waded through the surf.
