Cashmere Mafia's run may be over, but Bonnie Somerville says series fashion stylist Patricia Field's advice will stay with her forever.

"When in doubt, belt it! That's one thing she taught me," she told mystyle at the Art of Elysium gala. "And stick to what's flattering."

The actress' white Burberry suit certainly, well, suited her! "I knew everyone would wear gowns, so I decided to be rock 'n' roll chic," she explained.

Each year, Bonnie splurges on a designer tote and pair of shoes. She bought a Chanel bag and Chloé boots last year. What's she eyeing in '09? "I'm definitely getting a clutch. But I have to stay away from shoes for now. I have a problem!"

To unwind, she turns to Kate Somerville. No relation, right? "No, but I wish, because then I'd get free facials!" says the star, who aspires to look as "luminous" as Cate Blanchett did in Benjamin Button with the help of skincare guru's Kate in a Jar and Nourish Moisturizer. "Her skin was amazing!"