• PEPLUM IN HER STEP photo | Jessica Simpson

Credit: Humberto Carreno/StarTraks

Published: Tuesday September 11, 2012 06:00 AM EDT

2012

PEPLUM IN HER STEP

She's one hot mama! Leaving baby Maxwell at home, Jessica Simpson shows off her post-baby body following lunch with fiancé Eric Johnson on Monday in New York City, where the first-time mom made an appearance on Katie Couric's new talk show, Katie.