Jessica Simpson Skinny in New Weight Watchers Commercial: Watch Now

Jessica Simpson is ready for her moment in the sun!

Weight Watchers has released the full commercial starring its high-profile new spokeswoman, 32, in which she debuts her sexy, slim body -- 50 pounds lighter post-baby -- as she drives via pickup truck into the sunny desert.

PHOTOS: Jessica's body evolution

"I didn't need to be perfect to get here, to lose over 50 pounds on Weight Watchers," the entertainer and designer says, wearing body-hugging jeans, tight black top and flannel shirt. Simpson was faced with a major weight loss challenge after the May 1 birth of daughter Maxwell Drew Johnson.

Jessica Simpson

PHOTOS: Was baby Maxwell the story of the year?

"I'm only human.. I love food, I love life," she says in the commercial, where she takes in the scenery and twirls in the sunlight. "I had no idea I could be so in control and so free at the same time."

Now pregnant with baby number two, Simpson was M.I.A. when adorable baby Maxwell, now 8 months, went for a shopping trip with her dad, Simpson's longtime fiance Eric Johnson.

Watch the commercial now!