Sources: Britney Spears Performing at Billboard Music Awards!

Entertainment May 20, 2011 AT 7:16PM By UsWeekly Staff

Credit: Jason LaVeris/FilmMagic

Britney's back!

Sources tell Us Weekly that Britney Spears is heading to Las Vegas this weekend to perform live at Sunday's 2011 Billboard Music Awards.

PHOTOS: 29 years of Britney

The 29-year-old pop star will take the stage two times.

Spears will do one performance -- potentially the opening number -- with Rihanna, 23. The duo will perform Rihanna's hit song "S&M."

PHOTOS: Britney and her boys

Spears will also be performing for the first time ever with Nicki Minaj, 26. Spears and Minaj will partner up for a remix of Spears' hit "Till The World Ends."

Minaj first met Spears in April. Later that month, Spears confirmed on her website that Minaj would be joining her Femme Fatale tour this summer.

PHOTOS: Britney's bikini body through the years

"I'm obviously honored to be out with Britney," Minaj told Us of the tour. "She's freakin' paved the way for so many things right now in pop culture. I'm excited to be on with her."

So what will Spears' return to the live television be like? "It's gonna be big," a source says. "People will definitely be talking about it the next day."

The 2011 Billboard Music Awards air Sunday night at 8:00 p.m. on ABC.

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May 24, 2011 - 7:58pm Kennadie Mandrell
No talent clown.
May 22, 2011 - 6:23am Bjorn JoÃ«l la Tulippe
i hope it's true.. she recently tweeted: glad the world didn't end, cause im soo excited to watch the billboard awards! maybe she's just there to watch.. i soo hope she's just keeping this a secret! she'll do fine. and i hope she'll go live again! :D but probably not.
May 21, 2011 - 10:43pm Erica Rogers
John D is a jerk..can't you tell by his picture!
May 21, 2011 - 11:53am DarrenKim Horton
John D- you're a fvckin tard. She's not fat.
May 21, 2011 - 11:08am Andrie Diaz
OMG... im so excited. the pop star princess Britney Spears.. Go Britney!
May 21, 2011 - 9:41am John D
Oh boy, a fat, no-talent lip-syncher who can't sing or dance. That will help the ratings.
May 21, 2011 - 8:32am So Infamous
Britney cannot dance or put on a show like she used to. SAD!
May 21, 2011 - 8:14am Molly Gold
So how will Britney perform with Nikki and Rhianna when they sing and she lip synchs, are the also going to lip synch?
May 21, 2011 - 7:09am Pamela A Parker
Didnt you mean to say .......shes lip syncing and walking on stage ?????? BWAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
May 21, 2011 - 2:47am Shannon Burmatoff
It looks like she is wearing a wig
May 21, 2011 - 2:20am Jan Far
NOT GOREGOUS...andy say what you want.
May 21, 2011 - 12:26am Joanne Godfrey
Oh yes...now I can experience the rapture as a whole person...BFD.
May 20, 2011 - 11:04pm DarrenKim Horton
Andy- you like her- otherwise you wouldn't waste your time commenting. She might be fake, but she's gorgeous.
May 20, 2011 - 10:11pm Andy Gonzalez
fake
May 20, 2011 - 8:31pm Joel Del Bosque
Hope its more than just a rumor, cause that would be A-M-A-Z-I-N-G
May 20, 2011 - 8:23pm Breno Fonseca
OMG! PERFECT! GODNEY!
May 20, 2011 - 8:14pm Mikey Ziadat
OMG !!! :-O CANNOT F'IN WAIT, it's pop MADNESS. Queen of Pop and 2 hiphop princesses on 1 stage is AMAZING
May 20, 2011 - 8:12pm Rebecca Macatee
I am so excited!!!!!!!!!!!!!!!!