Tamara Ecclestone‘s body is all ready for summer.

The Formula 1 heiress, 28, showed off a tan, toned physique as she rested at Miami Beach’s Casa Tua with fiance Jay Rutland, 31, on Tuesday, and we’ve got the shots for you right here on RadarOnline.com.

PHOTOS: Tamara Ecclestone — Billion Dollar Beach Babe!

Clad in sunglasses and steaming things up in a snakeskin bikini, the socialite showed off an ample bust and carved abs as she enjoyed the sun on the pre-spring day, lazying away the day nibbling pizza, smoking cigarettes and canoodling with Jay, an ex-stockbroker.

The couple is slated to wed this summer in France, and Jennifer Lopez, Lionel Richie and Calvin Harris have been inked to entertain at the gig.