"Yeah, why not?" Gwen says. Pressing a fingertip tentatively to her toenail, she picks up the topcoat to add a layer. "It's a sleepover. It's the perfect time to try it." There's no better opportunity for fun and frivolous beauty adventure. Anyway, she doesn't think there is. Truthfully, she hasn't had a whole lot of sleepovers herself, and there hasn't been a whole lot of make up involved, but it seems right.