Olsen warms up with a coffee in the Big Apple. Plus: Alyson Hannigan, Lady Gaga, Mariah & Nick and more


Who's ready for the disco? The ever-fashionable Lady Gaga brings her high style and Monster Ball tour to L.A.'s Nokia Theatre for a glitzy performance Monday night. The singer, who will play two more shows in Los Angeles, wraps the U.S. leg of the tour in New York next month.