Slimmed-Down Jessica Simpson Jets to NYC for First Post-Baby Appearance

Jessica Simpson boards a flight out of Los Angeles.  Splash News

Jessica Simpson is taking her post-baby weight loss efforts seriously — and it's paying off, big time.

On Sunday, the mom to Maxwell headed to LAX to catch a flight to NYC. Before boarding her flight, Simpson, 32, looked comfy, casual and slimmer than ever in a black tunic and formfitting black pants.

Jessica Simpson 2
Jessica SImpson Sharky/Splash News

The Fashion Star mentor is slated to make her first public appearance since giving birth four months ago during a chat with Katie Couric on the TV host's new talk show Monday. See more photos of Jessica Simpson's post-baby body.

Last week, Simpson opened up to Us Weekly about her success using Weight Watchers so far.

"I'm 10 pounds away from my pre-baby size," said the singer/designer, who got up to 170 pounds while pregnant.

In addition to adhering to the popular point-based eating plan, Simpson said she's working out four times a week with celeb trainer Harley Pasternak.

"Her waist is going in, and her thighs are getting smaller," Pasternak said of his A-list client's progress so far.

Though she still has a little bit of work to do before she's back to her goal weight, Simpson is confident she can make it happen. Now that she's a mom, she told Us, "I believe I can do anything!"

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