HOUSTON -- Nicole Scherzinger took part in a special press conference before the 25th Anniversary of WrestleMania Sunday afternoon. The lead Pussycat Doll spoke to WWE.com and media outlets from around the world as members of the WWE Universe began filling the 70,000-plus seats at Reliant Stadium.

Scherzinger will open the show with a WrestleMania tradition, singing "America the Beautiful." She joins a list of numerous musical legends who have done this honor, including Ray Charles, Aretha Franklin, Ashanti and John Legend.

"Looking out at the stadium today, it's a lot bigger than the tour I'm on right now. I'm used to performing in front of 30,000 people every night. I believe there are 70,000 people out there. This is the very first time I've ever sang ‘America the Beautiful,' so I'm a little nervous but very excited."

Scherzinger had the opportunity to meet several Superstars, Divas and even a WWE Hall of Famer.

"I met a Superstar today, and he came up to me after my soundcheck and he was so kind to me. He said, ‘I've been here for years. I've seen Aretha Franklin. I've seen them all. If you sing like that tonight, I've never heard anybody do it better. It was really amazing. And I believe his name was Ric Flair."

The 25th Anniversary of WrestleMania marks the Pussycat Doll's first WWE event, but she's also had the pleasure to get to know one of her favorite Divas today.

"The Pussycat Dolls were paired up with the Divas, and I know my pair was Maria and I was really excited to meet her today. I got to meet some of the other wrestlers, as well. It's a huge extravaganza. It's amazing."

Don't forget, Kid Rock will also perform at the 25th Anniversary of WrestleMania. The five-time Grammy nominated artist will sing several of his hit songs, including "Cowboy," "Bawitdaba," "Rock N Roll Jesus" and "So Hott."

Be a part of all the action tonight, and watch Scherzinger's and Kid Rock's historic performances at the 25th Anniversary of WrestleMania at 7/6 CT, only on pay-per-view.