The "Umbrella" singer shows off her wild style on the streets of N.Y.C. Plus: Miley Cyrus, Heidi Klum, Usher and more

JOY RIDE

Lions and tigers and pop stars, oh my! Britney Spears checks out the sights at the London Zoo with sons Jayden James, 2 ½, and Sean Preston, 3 ½ (not pictured), on Tuesday. The singer has been taking time out from her European tour for some family fun with her boys.