The two Hollywood stars attended the event wearing almost matching suits, ties and shades. Cooper's rumored girlfriend, Suki Waterhouse, was also there sitting on the opposite side of the actor.
According to the Daily Mail Buttler and Cooper have been friends ever since they co-presented an award at the Oscars in 2010.
Andy Murray beat Novak Djokovic in three-straight sets, 6-4, 7-5, 6-4 to win Wimbledon on Sunday. Murray became the first British player to win the famed tournament in 77 years.
Notable deaths of 2014 [PHOTOS]