Boy wonder Justin Bieber and bad girl Ke$ha have a date at the Tampa Bay Times Forum on Sunday as part of the impressive pop lineup for 93.3-FLZ's annual Jingle Ball.

One Republic, Ed Sheeran, Sean Kingston, The Ready Set, Bridgit Mendler, Austin Mahone, Walk the Moon and Zedd with Matthew Koma are also scheduled to perform.

That "Gangnam Style" goofball PSY had to drop out due to an invite from the White House, but you can still ride the pony with him on Saturday.

PSY will appear at the station's 'Jingle All The Way' event. Psy is scheduled to be at University Mall in Tampa at 4:30 p.m. The event is free.

Jingle Ball will kick-off with "Pre-Show on the Plaza," the official 93.3 FLZ's Jingle Ball pre-event celebration on the West Plaza of the Tampa Bay Times Forum. The free bash will include performances by Bridgit Mendler, Mahone and Ready Set. The event will welcome fans of all ages at 3 p.m.

Details: 6 p.m. Dec. 9, Tampa Bay Times Forum, 401 Channelside Drive, Tampa. Tickets: $42-$175. Information: 813-287-8844 or www.ticketmaster.com.

--Wade Tatangelo