he delivered a great video with Blow.

Soures 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.

If I could I'd slap her ass so hard. I might at least get a live scream out if her...

That was embarrassing last night. Having two appearances with two singers of whom both sang live while you lipsync??? And she had like 5 sentences total???? Damn. She's aware EVERYBODY knows she's not the greatest vocalist, but why can't she just go and do it live??? Rihanna was a total mess on S&M, it's not like Britney needed to do something great to match her at least.

If I could I'd slap her ass so hard. I might at least get a live scream out if her...

Lol, There's huge buzz about Brit And Rithard's performance in Latin America, nearly every newspeaper/talk show reported it.

Radar 5/5 - This one gets uncessesary shade tbh

I think the only reason I have a grudge against Radar is because of it's random appearance on Circus AND that it was a single. I mean, what the heck. That was just dumb.

Britney Spears

Vocal type: Naturally an alto but commercially she's classified as a soubrette.

Vocal range: 2 octaves 2 notes A5: “Blur” – E3: “Toxic” G5: mimicking an opera singer

Vocal strengths: What she lacks in technicality and power she makes up for in tone and the ability to play any part, vocally, a song calls for. Spears is not a singer in the classical sense of the word (though at the start of her career she was on that path). She is a vocal actress, capable of transforming her weak yet iconic voice into any particular role. Whether it's a babyish coo, a bratty nasal whine, reedy and deep or a girlish hiccup -- each is dynamically different from the other, yet still Britney. It's her timbre and distinctive enunciation that set her apart from the gaggle of legitimately vocally talented pop stars -- the girl put a “h” in her pronunciation of “baby” in “Unusual You”...and it worked! Simply put Spears can adjust and distort her voice in so many ways she is undoubtably the ultimate producer's muse.

Vocal weaknesses: Years of smoking, improper technique, poor breath control and lack of practice have rendered Spears as one of the poorer vocalists of her generation. Budding with enormous potential at the start of her career, Jive opted for that nasally voice heard on ...Baby One More Time. By her fourth album Spears vocal strength had clearly diminished and her belting stopped altogether, relying heavily on post production tricks like auto-tune and protools. An unfortunate crutch that has stunted any further vocal growth or development. Femme Fatale's co-executive producer Max Martin, commented, "When we do songs, there's kind of a nasal thing. With NSYNC and the Backstreet Boys, we had to push for that mid-nasal voice. When Britney did that, she got this kind of raspy, sexy voice".

Recommended listening: “Luv the Hurt Away”, “Don't Hang Up”, "I Run Away" and “Baby Boy (unreleased demo)”

Britney Spears

Vocal type: Naturally an alto but commercially she's classified as a soubrette.

Vocal range: 2 octaves 2 notes A5: “Blur” – E3: “Toxic” G5: mimicking an opera singer

Vocal strengths: What she lacks in technicality and power she makes up for in tone and the ability to play any part, vocally, a song calls for. Spears is not a singer in the classical sense of the word (though at the start of her career she was on that path). She is a vocal actress, capable of transforming her weak yet iconic voice into any particular role. Whether it's a babyish coo, a bratty nasal whine, reedy and deep or a girlish hiccup -- each is dynamically different from the other, yet still Britney. It's her timbre and distinctive enunciation that set her apart from the gaggle of legitimately vocally talented pop stars -- the girl put a “h” in her pronunciation of “baby” in “Unusual You”...and it worked! Simply put Spears can adjust and distort her voice in so many ways she is undoubtably the ultimate producer's muse.

Vocal weaknesses: Years of smoking, improper technique, poor breath control and lack of practice have rendered Spears as one of the poorer vocalists of her generation. Budding with enormous potential at the start of her career, Jive opted for that nasally voice heard on ...Baby One More Time. By her fourth album Spears vocal strength had clearly diminished and her belting stopped altogether, relying heavily on post production tricks like auto-tune and protools. An unfortunate crutch that has stunted any further vocal growth or development. Femme Fatale's co-executive producer Max Martin, commented, "When we do songs, there's kind of a nasal thing. With NSYNC and the Backstreet Boys, we had to push for that mid-nasal voice. When Britney did that, she got this kind of raspy, sexy voice".

Recommended listening: “Luv the Hurt Away”, “Don't Hang Up”, "I Run Away" and “Baby Boy (unreleased demo)”