[artist id="10551"]Kid Rock[/artist] and [artist id="1632950"]Nicole Scherzinger[/artist] have been tapped as the musical guests for "WrestleMania XXV" on April 5 in Houston at the Reliant Astrodome. Scherzinger, minus the rest of the [artist id="1841713"]Pussycat Dolls[/artist], will open the show with her rendition of "America the Beautiful." In the past, Ray Charles, Aretha Franklin, Ashanti and John Legend have performed the song at the show. Meanwhile, Kid Rock will be playing a medley of his hits "Cowboy," "Bawitdaba," "Rock N Roll Jesus" and "So Hott."

Not only will Scherzinger and Rock be on hand for the big show, but "The Wrestler" star Mickey Rourke is also confirmed to make an appearance, after backing out of the event earlier this year. Last week, Chris Jericho challenged Rourke's pals Jimmy Snuka, Roddy Piper and Ricky Steamboat to fight on behalf of the Oscar nominee at the 25th anniversary of "WrestleMania."

On the March 16 episode of "Monday Night RAW," Jericho also offered to buy Rourke a ticket and said that when the actor shows up, he "will not be responsible for what happens to the Academy Award nominee and his friends." The appearance was also confirmed by WWE Chairman Vince McMahon, who said, "Rourke will be in attendance at 'WrestleMania.' "

Why? Back in January, Rourke talked about his initial interest in making an appearance at the event. "The boys from the WWE called me and asked me to do it," Rourke told "Access Hollywood." "I said, 'I want to.' I'm talking with [WWE legend] Rowdy Roddy Piper about it."

He later backed down, but not before saying, "Chris Jericho, you better get in shape because I'm coming after your a--."

Rourke's appearance was also confirmed by WWE Chairman Vince McMahon, who said, "Rourke will be in attendance at 'WrestleMania.' "