The 36-year-old fashionista turned heads in New York City in a sheer floral top on Wednesday night, stepping out with her husband, Eric Johnson. Simpson highlighted her flat stomach in a pair of chic black trousers, and prominently showed her black bra in the shoulder-baring blouse.
On Tuesday, the mother of two also had jaws dropping in a tight, black minidress and heels, flaunting her famously toned legs as well as plenty of cleavage. Ever the gentleman, 37-year-old Johnson sweetly grabbed his wife's hand to help her over the curb.
Simpson is the latest celeb to get in on the super sheer fashion trend, following Kim Kardashian West, who's been all about the racy style lately.
"My boobs just have their own life, they have a way of making themselves present...I thought I was going to get a breast reduction," Simpson told Women's Health magazine. "But after having kids, I look at myself and I’m like, 'You know what, my boobs are actually really big, but I like how they are.' They’re an asset, and Eric loves them still.”
She also called her intense workouts an "emotional experience."
"I give myself so many excuses not to get on the treadmill, to not do that lunge," she admitted. "Workouts are an emotional experience. I exercise to clear my head. It makes me stronger on every level."
"I think being a mom is enough of a diet," she told ET when we spoke to her in January. "You have to run around chasing your kids, but I do eat a lot of their corn dogs, so I have to get on the treadmill a lot to watch my TV shows."