The Dancing With the Stars ballroom will have Bieber fever all over again this Tuesday on the first Results Show of Season 15 All-Stars!

An official ABC tweet went out Wednesday, teasing the first guest stars of the fall 2012 season: “Countdown to DWTS! @JustinBieber will be performing during the first Results Show along with @Pitbull, Tuesday September 25 at 8|7c!”

Both Justin Bieber and Pitbull have been on DWTS before. Here’s Pitbull performing "Give Me Everything” and over here's Justin performing "Never Say Never." Justin’s girlfriend, Selena Gomez, has also performed on DWTS a couple of times, including last spring on Season 14.

Tuesday’s Results Show will be two hours long, so we’re expecting more performance details to come. Of course, the first Results Show will also mean one All-Stars couple will have to hit the road after only one performance. We’re not looking forward to that part...

Dancing With the Stars Season 15: All-Stars will premiere on Monday, September 24 at 8 p.m. ET/PT on ABC. Check out the full All-Stars cast list here.

Source: @DancingABC

Gina Carbone is a contributing writer at Wetpaint Entertainment. Follow her on Twitter @ginacarbone.

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