Wedding Crashers (2005)

John Beckwith (Wilson) and Jeremy Grey (Vaughn), Washington D.C.'s top divorce mediators and lifelong best friends, have never met a wedding they couldn't charm their way into. Guided by a secret set of “wedding crashing rules,” the pair attends a different wedding every week and romances different bridesmaids. But, when they crash the social event of the season, John falls for the daughter (McAdams) of an influential and eccentric politician (Walken) and decides to break the “rules” in pursuit of her love. What results is a wild weekend at her family's palatial estate where the ultimate “crashers” quickly find themselves in way over their heads!