Jessica Simpson is bringing sexy back to NBC's Fashion Star! Returning to the network's reality hit for season 2, premiering March 8, the second-time mom-to-be is mentoring a new crop of wannabe fashion designers and encouraging them to sex up their styles.

"I came back to Fashion Star because I was really excited to work with the designers. We're mentors to help the designers make sure their choices are correct," Simpson, 32, explains in a behind-the-scenes preview clip as she advises one of her four contestants to make more provocative clothes.

As the contestants' designs make their way down the runway in the hopes of being purchased by buyers from Saks, Macy's and Express, Simpson puts on her own fashion show of sorts with her judging attire. Rocking a hot pink blazer in one scene, Eric Johnson's fiancee shows off her curves and massive cleavage during another catwalk critique.

Confirming her second pregnancy on Christmas Day 2012 — one month after Us Weekly exclusively revealed she was expecting — Simpson would often bring her mini fashionista-in-training, daughter Maxwell Drew, to Fashion Star's set. A source tells Us that Simpson would leave her little girl with Grandma Tina Simpson when the cameras rolled. "Maxwell is a total mommy's girl," the source explained. "She just wants to be held by Jessica."

PHOTOS: Jessica's special bond with Maxwell

Watch the video above for more on season 2 of Fashion Star — featuring judges Nicole Richie, John Varvatos and new host Louise Roe — before the show premieres March 8 at 8 p.m. (EST) on NBC.

Source: US Weekly