Entertainment Tonight ET Online ETOnline.com

The Fashion Star mentors throw their pupils for a loop this week when the designers are tasked with creating a collection that's outside of their normal wheelhouse.

VIDEO: Jessica Simpson Doesn't Want To Be A 'Bride-zilla'

And for Ross Bennett, that means lingerie!

The designs wow Jessica Simpson, but it's Nicole Richie's reaction to host Elle Macpherson's not-so-supportive reveal that truly makes this moment a must-see!

Fashion Star airs Tuesdays at 10 p.m. on NBC.