The cumbersome gown, Duncan says, serves as a visual metaphor for the event, which goes sour after Kat learns Bastian has been cheating on her. In a spur-of-the-moment turn of events, Kat spots a stranger, Charlie, played by Owen Wilson, holding a “Marry Me” sign and accepts the proposal. The wedding dress sequence ends poignantly. “First, you see her get into the car, and it’s a symbol of how that wedding had gotten too big, and it wasn’t honest and has taken over her ability to see who she was marrying,” Duncan says.