Watch out for Jessica Biel's lush lashes! The actress is the new face of Revlon's new Grow Luscious Plumping Mascara, and stars in a new commercial for the product that just hit stores this week. Black Swan's Darren Aronofsky directed the 60-second clip (check it out here), which features original music by Pharrell and a guest appearance by the musician. "I was so excited when Revlon told me I'd be working with Pharrell," Biel tells InStyle exclusively. "I'm a massive fan of his music, and he's so sweet!" Click "See the Photos" for exclusive behind-the-scenes pictures, and more of Biel's thoughts on her Revlon makeup shoot!