Kato Kaelin makes his Vegas cameo

America’s most notorious houseguest, Kato Kaelin, is about to make his Vegas debut as Sin City’s most notorious wedding guest.

Kaelin will assume the role of a “celebrity wedding crasher” in Planet Hollywood’s off-Broadway show Tony n’ Tina’s Wedding for two weeks. His first performance will be tomorrow night and the actor will reprise the role through April 9.

Kaelin will arrive in Las Vegas this afternoon and will be attending the celebrity-studded classic rock showcase at the Hilton, Monster Circus, this evening.

The 50-year-old actor sprung into the spotlight in 1994 during the O.J. Simpson murder trial. Once a struggling actor, Kaelin had been staying in Simpson’s guesthouse on the night the NFL All-Star’s ex-wife and lover were allegedly murdered. Kaelin served as a witness during both of Simpson’s trials and his inconsistent testimony and foggy memory led prosecutor Marcia Clark to call him a hostile witness.

Since then, Kaelin has appeared in several movies, commercials, game shows and reality shows. He is taking a break from his tour with what is being called the mens’ version of the Vagina Monologues, Weenie Manologues, to appear on the Vegas stage.

In addition to Kaelin, performances of Tony n’ Tina’s Wedding feature a full Italian buffet dinner (which is prepared by the same chefs responsible for the casino’s Spice Market Buffet), along with traditional wedding stables like wedding cake, champagne, a live band and dancing.

The popular play holds the title of the second longest-running off-Broadway show, and Tony and Tina have walked down the aisle more than 2,000 in Las Vegas.