Steve Martin and Martin Short honored their late Father of the Bride costar Diane Keaton in a touching tribute during their recent Las Vegas show. Martin, 80, and Short, 75, took the stage at Encore Theater at the Wynn, using the final few moments of their Saturday, October 11, set to share a photo of Keaton on the screen behind them. Attendees posted videos via X of the comedians gesturing toward the screen as the crowd roared with applause. Short blew a kiss to Keaton's photo before he and Martin lifted their glasses to clink cheers and toast to the actress.