Jessica Simpson is one hot mama!

The 35-year-old star showed off her super flat stomach in a long-sleeved black knit crop top, which she paired with polka dot trousers, in New York City on Sunday. Looking glam accessorizing in black sunglasses and black high heels, Jessica was joined by her husband, Eric Johnson.

WATCH: Jessica Simpson Shows Off Her Incredible Swimsuit Bod

These days, it's hard to believe Jessica was brutally teased for gaining weight during her first pregnancy with her daughter, 3-year-old Maxwell Drew. Aside from her enviable abs, the fashion mogul also recently showed off her toned legs on Halloween, when she dressed up as supermodel Christie Brinkley from 1998's "National Lampoon's Vacation."

In January, Jessica sweetly shared that her hubby loves her at any weight.

"My husband and I were looking at old pictures recently, and I asked him, 'Babe, why didn't you tell me to put the brownie down?'" she joked to InStyle magazine. "He said, 'You looked great.'"

"He's always loved every curve on my body," she gushed. "And we've always had a healthy sex life."

WATCH: Jessica Simpson Accused of Being Drunk During Live TV Appearance