For the past few days, these are the celebrities spotted at the U.S. Open.
Luke Wilson
Martha Stewart
Alec Baldwin
Chace Crawford and Nicole Fiscella
Jeremy Piven
Adrian Grenier
Kim Cattrall and her boyfriend, Canadian chef Alan Wyse
Melania and Donald Trump
Cameron Diaz and Paul Sculfor
Candice Bergen and her huband Marshall Rose 
Star Jones
Djimon Hounsou and Kimora Lee Simmons
Tiger Woods and wife Elin Nordegren(Images via U.S. Open official website)