'Fashion Star' Finale: Jessica Simpson Gives Rockin' Advice (Exclusive Video)

Fashion Star Season 2 Mentors - H 2013

The season two winner will be crowned in Friday night's episode of the NBC design competition.

It's down to the final three on Fashion Star, with a winner set to be crowned in Friday night's finale.

In the season two closer, the remaining designers -- Cassandra Hobbins, Daniel Silverstein and Hunter Bell -- are tasked to create their own collection for each of the retailers. Eliminated designers return to assist their teammates -- which isn't welcome news to all of them.

PHOTOS: Reality TV Stars Turned Fashion Designers: The 6 Biggest Success Stories

The Hollywood Reporter has an exclusive clip from the finale, in which mentor Jessica Simpson gives Bell some advice on designing a rock 'n' roll-inspired look.

"I've been spending a lot of time with Hunter, and I would definitely say that I am now emotionally attached and emotionally involved," Simpson tells the camera.

The winning designer will have his or her collection sold in Macy's, Saks and Express.

Fashion Star airs at 8 p.m. Friday on NBC.