Celebrity Stalking: Serena Williams, Tika Sumpter, Zendaya, Nick Cannon & Dave Hollister

Wearing high heels and a curve-hugging skirt, Serena Williams plays tennis with David Letterman outside of the ‘Late Show with David Letterman‘ studios in NYC.

Tika Sumpter is all smiles as she leaves the Ed Sullivan Theater in NYC where she was in the audience for a taping of the ‘Late Show with David Letterman’.

Nick Cannon attends “America’s Got Talent” Season 9 Post Show Red Carpet Event – Radio City Music Hall in New York City.

A bare faced Zendaya poses behind-the-scenes of KC Undercover.