Isla Fisher is an Australian actress, best known for her role as Gloria Cleary in the 2005 comedy film 'Wedding Crashers'. She plays the love interest of Vince Vaughn's character, John Beckwith. Her character is a free-spirited and eccentric woman who is determined to make her wedding day perfect. Fisher's performance was praised by critics and audiences alike, and she earned a nomination for a Teen Choice Award for Choice Movie Actress: Comedy.