Lindsay Lohan, holding hands with beau Harry Morton at the opening of the Waist Down Skirts by Miuccia Prada exhibit at the design house's Beverly Hills store. Also on hand at the star-studded event: Eva Mendes, Nicole Richie, Joaquin Phoenix, Paris Hilton, Rebecca Romijn and Kristen Bell.
Christina Aguilera, giving a private performance at Andrita Studios in Los Angeles. The singer sang four songs – including "Ain't No Other Man" – off her upcoming double album Back to Basics. During her set, she gave a shout-out to husband Jordan Bratman and her mom. The event was recorded for an MTV special.
Mandy Moore, shopping at the Whole Foods store in West Hollywood. On her to-buy list: grapefruits, strawberries, vegetarian turkey, cream cheese and iced tea.
Pink, riding her bike around Washington, D.C. – but the singer got lost en route to the Results Gym and missed her appointment. As an apology to Results owner Doug Jefferies, she offered him backstage passes to her concert. "She is the sweetest," he told us.
Sophia Bush, skipping down the sidewalk Wizard of Oz-style with Frankie Muniz, after dining with him and a male companion at West Hollywood eatery Café Med.
Richard Beetham / Splash
Nicole Richie, partying at the Viper Room in West Hollywood. Also there to check out celeb deejay Samantha Ronson's new band: Mary-Kate Olsen, Cisco Adler, DJ AM and – yes, you're reading this right – Farrah Fawcett.
By SHANNON BRADLEY, MAUREEN HARRINGTON, EMILY HOCHBERG, AMY ELISA KEITH, MARISA LAUDADIO, KIMBERLY LANSING and BRENDA RODRIGUEZ