We spotted Hayden Panettiere leaving Boujis nightclub in London with her boyfriend Wladimir Klitschko last night. After staying out until the early hours of the morning, the couple returned to their hotel.

Hayden is in the British city promoting her new film "Alpha and Omega," an animated film about two mismatched wolves who embark on a cross-country quest to get back home and restore peace in their pack after being relocated thousands of miles away by well-meaning park rangers.

The former "Heroes" actress stars in the upcoming film "Naomi and Ely's No Kiss List" about a woman whose friendship with her best gay male friend is strained when he crosses the line by kissing her boyfriend. She also stars in "Scream 4."

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