Casual Katie upstaged at film producer Brad Grey's wedding

By DAILY MAIL REPORTERCelebrity guests: Katie Holmes and Tom Cruise arrive at the wedding of Paramount Pictures CEO Brad Grey at his Bel-Air mansion yesterdayIt was a star-studded event by any account.So the competition between the celebrity guests in the glamour stakes at film producer Brad Grey's wedding was always going to be high.Among the guests were Katie Holmes and husband Tom - but it was