The 32-year-old entertainer greeted photographers with her pearly whites, while fiancé Eric Johnson trailed close behind with the couple’s baby girl Maxwell.
Simpson, who gave birth four months ago, recently opened up about her post-pregnancy weight loss.
The Weight Watchers spokeswoman reportedly shot up to 170 pounds during her pregnancy.
“I’m 10 pounds away from my pre-baby size,” Simpson recently told Us Weekly.
Since the birth of Maxwell, Simpson has been maintaining a healthy diet and exercise routine. She told Us Weekly that she does “at least 14,000 steps a day,” along with regular sessions with a trainer.
Simpson has also kept an active Twitter profile, frequently updating her fans of her Weight Watchers activities, both on and off the treadmill. The Texas-native also recently shot her first commercial for the company.
24 is my new treadmill show!! How have I not watched this show before now?!?! Jack Bauer is my hero!
— Jessica Simpson (@JessicaSimpson) August 29, 2012
The Fashion Star judge is scheduled to appear on the premiere episode of Katie Couric’s new show, Katie, this week.
Click through the gallery above for photos of an airport chic Jessica Simpson.