American Idol’s Allison Iraheta is outside the MTV studios in New York for the Alexa Chung show

Jessica Simpson is out and about in New York signing autographs for fans (like she’s signing autographs for non-fans..duhh what a stupid thing to say)

Britney Spears is in West Hollywood at Fred Segal’s celebrating her 28th birthday.  Nothing says birthday celebrations like shopping

Jessica Alba arrives at a business meeting in Beverly Hills

Old Dogs’ star Robin Williams is out and about in Manhattan’s Upper West Side

Hugh Jackman arrives for his Wednesday matinee performance of ‘A Steady Rain‘ in New York

Ashley Tisdale is out and about in Hollywood

Pictures after the break

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Photos:  Patricia Schlein/JDH/JCP/A. Miller/www.wenn.com