Katy Perry will be joined by Missy Elliott during her performance at the Super Bowl XLIX halftime show on Sunday, a source told The Associated Press on Thursday. The Grammy winner, who featured in Perry’s song, "Last Friday Night (T.G.I.F.)," in 2011, will reportedly make a surprise appearance during the “Roar” singer’s performance.

During a news conference Thursday, Perry spoke about her performance, saying that it will include "a lion and sharks." She also reportedly said that her performance will include an "old school" female singer, but declined to reveal who she was. Lenny Kravitz will share the stage with Perry at the time of her performance at the University of Phoenix Stadium in Arizona. However, Elliott's participation has not yet been announced by the NFL.

"When you hear the first ring of the chord, I think jaws will drop and faces will melt," Perry reportedly said. "It's going to be wild out there," she said, adding that she felt blessed that she could perform at the show "at such a young age."

With her halftime performance at the Super Bowl, Perry will join an elite list of performers who have been part of the event, including Bruno Mars, Beyoncé, Madonna, The Who, Bruce Springsteen & The E Street Band, Tom Petty and the Heartbreakers, Prince, The Rolling Stones, Paul McCartney and U2. 

Perry also said, during the press conference, that she may perform two of her hits, "Roar" and "Firework," and that her act will celebrate "female empowerment," according to AP.