Penny Lovell, Rose Byrne
"I think it's really important to feel good and also
comfortable in a party look," says
Penny Lovell, who dresses
Rose Byrne and
Mary Elizabeth Winstead. "After all, it's the holidays. You are supposed to look great and, more important, have fun. Make sure your outfit isn't too tight; if need be, buy a dress in a size up and find an inexpensive tailor to alter it for you."