Jessica Simpson is taking her post-baby weight loss super seriously -- and we're finally getting a look at how it's paying off!

Jess hit LAX on Sunday to catch a flight to New York... and she looks totally great! The new mom will appear on Katie Couric's talk show Monday in her first official appearance since giving birth to daughter Maxwell four months ago.

Related Article: Happy Birthday Jessica Simpson!: A Birthday Retrospective

Covering up a bit in a flowy black tunic and black pants, Jessica already looks so much thinner, and she revealed to Us Weekly that she's still got ten pounds to go before she even gets to her pre-baby weight!

After giving birth, Jessica signed a huge deal with Weight Watchers and has also been working out multiple times a week with a personal trainer. You go, girl!

Do you think Jess will keep up her figure after she reaches her goal?

Photos Courtesy of: Fame/Flynet