The singer suits up as a police officer on the Harlem, N.Y., set of her new video. Plus: Pete Wentz, Kanye West, Britney Spears and more

SKY HIGH

Who's a high jumper? Madonna just can't stay grounded as her Sticky and Sweet tour rolls into her adopted hometown of London for a show Thursday at Wembley Stadium. The night before, the pop star helped hubby Guy Ritchie celebrate his 40th birthday.