Fashion Friends: Stars and the Designers They Love

The only thing cooler than getting to wear amazing couture duds? Having the person who created those duds on speed dial. See the fashionable figures Elizabeth Olsen, Emma Stone, Cameron Diaz and more celebs are tight with

ASHLEY LOVES FRANCISCO

When it came to launching her now wildly successful line, The Row, Ashley Olsen looked to Calvin Klein's creative director Francisco Costa for inspiration. "When I first moved to New York, he's the guy that really captured my eye. I followed [his work]," she revealed to PEOPLE.