Kim Kardashian perfects “Bright orange Bikini” Butt & Ass in Miami

Kim's weight has fluctuated over the years, with the petite 31-year-old oscillating between a gym honed taught figure and her more natural curvy shape.

Recent pictures of her in form fitting outfits have sparked speculation that she has added weight to her curves.

Scroll down to see more pictures . . . .

Limbering up: After her dip Kim showed off a few workout moves, doing some stretches on the beach

Taking some tips: Kim was joined by her publicist friend, The Spin Doctor star Jonathan Cheban (Read more and See more Pictures)