05/09/2011 at 10:00 AM EDT
Hollywood royalty, meet the more traditional kind.
and Prince Harry
were spotted chatting Saturday at a polo match in Royal Berkshire's Coworth Park, an event to benefit his charity Sentebale
The Oscar winner, 35, was decked out in a conservative black blouse and skirt. Harry, 26, wore his traditional polo gear.
The princes' foundation was set up in 2009 as the focus of their charity work.