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Jessica Simpson and John Mayer in Australia

Britney Spears at a Lakers game

Lindsay Lohan and Kimberley Stewart in Malibu

Nicky Hilton shopping on Melrose

Elisha Cuthbert at a Knicks game

Ashlee Simpson leaving Parc in Hollywood

At the Kids Choice Awards:
Jamie Lynn Spears, Mandy Moore, Gwen Stefani and Justin Timberlake

Hilary ...