08/12/2014 08:59 EDT

Jessica Simpson Looks Freakin' Amazing In A Black Swimsuit

Kim Kardashian and her tiny bikinis have nothing on Jessica Simpson!

On Tuesday, the gorgeous mom took to Instagram and flaunted her super toned bod in a plunging black one-piece swimsuit that left little to the imagination.

Wearing the belted bathing suit, a pair of wedges and a beautiful flower crown, the 34-year-old newlywed was the epitome of a hard-working Weight Watchers spokesperson and the proof was in her crazy awesome toned legs and arms (and how about all that cleavage?).

"Oh yea girl...We are proud to be in our bathing suits!! @baylormcg #hardworkpaysoff #workoutpartnersforlife," the blond bombshell captioned the Insta-pic.

It seems as if the pic was taken at a bridal shower for younger sis Ashlee Simpson, who's engaged to Diana Ross' son, Evan Ross.

Both Evan and Ashlee attended Jessica and Eric Johnson's romantic wedding just last month, where the bride wore a stunning custom Carolina Herrera ballgown.

Can't wait to see what Jess wears at Ashlee's nuptials!

Also on HuffPost

Photo gallery Jessica Simpson Through the Years See Gallery