Winehouse steps into the spotlight during the 46664 concert honoring Nelson Mandela in London. Plus: Rihanna & Adam Levine, Blake Lively, Mary-Kate Olsen and more

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LONGHORN GAL

Don't mess with Texas: Houston native Beyoncé shows her love for her home state while arriving Thursday at London's Heathrow Airport. Earlier in the week, the singer threw a lavish 22nd birthday bash for younger sis Solange.