Duff celebrates her sweet 18 in L.A. Plus: Lindsay Lohan, Cameron Diaz, George Clooney and more

EQUAL FOOTING

Onscreen sisters Toni Collette and Cameron Diaz flash smiles at the Beverly Hills premiere of their movie In Her Shoes on Wednesday. They play sisters who bond with their grandmother (Shirley MacLaine). "Working with Toni and working with Shirley was great," says Diaz. "They're actors that you could trust."