Tim Ogier/ABC

Jennifer Lopez picked up the prize for Favorite Latin Music Artist Sunday night at the American Music Awards.

Lopez also performed her sexy single "Papi" and joined fellow Latin Music Artist nominee Pitbull for her hit single "On The Floor."

Meanwhile, her soon-to-be ex, Marc Anthony, also hit the stage with collaborator Pitbull to perform "Rain Over Me."

Despite sharing the same space and sharing hit producer Pitbull, J Lo and Marc Anthony seemed to successfully avoid each other ... including Lopez's avoidance of Marc's name in her acceptance speech.

She thanked her family and her long-time manager Benny Medina, but even as she struggled to find her next words, the name "Marc," never popped into her mind ... or at least not out of her mouth!

Tim Ogier/ABC

He may have lost out on winning an American Music Award this year, but at least Justin Bieber had gorgeous girlfriend Selena Gomez on hand to comfort him!

Presented by his friend and collaborator, Sean Kingston, the "Baby" singer took to the stage to perform his festive hit single "Mistletoe," from the chart-topping Christmas album, "Under the Mistletoe", while wearing an all-white leather motorcycle outfit.

Justin also helped close down the awards show with LMFAO, as they performed their hit “Party Rock Anthem” while showing off some killer dance moves.

You're still a winner in our eyes, JB

It was all about the ladies at the 39th annual American music Awards held tonight, in Los Angeles.

Country songstress Taylor Swift beat out Katy Perry and Adele to nab the coveted Artist of the Year award, while also winning both Country Female Artist of the Year and Country Album of the Year for “Speak Now.”

Nicki Minaj took home Favorite Rap/Hip-Hop Artist of the Year, and Favorite Rap/Hip-Hop Album for her debut "Pink Friday", and the standout singer made sure to thank her #1 fan Taylor Swift in her acceptance speech.

Breakout British artist Adele, who was unable to attend due to a recent throat surgery, was horned with Adult Contemporary Artist of the Year, Pop/Rock Album for “21” and Pop/Rock Female Artist of the Year.

Big performances of the night included Favorite Latin Music Artist winner, Jennifer Lopez, who performed sexy single “Papi” in a nude rhinestone-covered body suit before belting out "On The Floor" with fellow Favorite Latin Music Artist nominee Pitbull.

Justin Bieber, who took home no awards tonight, donned a white leather motorcycle ensemble to perform his new holiday single, “Mistletoe”, while girlfriend Selena Gomez proudly cheered him on from the audience.

Notable presenters included Sean Kingston, who recently recovered from a near-fatal jet-ski accident, and Adam Lambert who has been notably absent from the AMAs since his controversial same-sex kiss during a 2009 AMAs performance.

Check out a complete list of tonight's AMA winners, after the jump ...

Tim Ogier/ABC

Showing off her sexy curves in a body-hugging Vivienne Westwood Couture gown, electric blue shoes and hot pink hair, Katy Perry looked like a modern day pin-up girl at the American Music Awards tonight.

The "California Girls" singer was honored with a Special Achievement award for becoming the first female artist to have five No. 1 singles from a single album -- "Teenage Dream".

Tim Ogier/ABC

Perry also got to rock out on stage, performing her new hit single, "The One That Got Away."

But where was hubby Russell Brand? Could those "marriage trouble" rumors be true?

Tim Ogier/ABC

Kicking off the 39th Annual American Music Awards with an electrifying performance of "Turn Me On" and "Super Bass", Nicki Minaj got the show off to a rockin' start, with the help of American Idol alum, David Guetta.

The pink haired rapper later ditched her metal wear for a bright green ball gown skirt and black lace bodice to pick up her awards for Favorite Hip Hop Artist and Favorite Hip Hop Album.

Also in attendance? Little Sophia Grace Brownlee, the 8-year-old who received worldwide attention after taping her own cover of “Super Bass,” and posting it on YouTube. The budding rapper was there to interview the stars for The Ellen DeGeneres Show!

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Couple of the moment Justin Bieber and Selena Gomez stunned on the American Music Awards red carpet tonight. In fact, Justin's slick hairdo was more talked about than Selena's sexy cut-out gown!

The usually-fringed teen heartthrob broke out the gel and the comb, parted his hair on the side and glued it all down. Hey, he looks quite debonair!

Meanwhile, 19-year-old Selena looked amazing in a pewter Giorgio Armani gown. What a hot couple!

Big winner of the night Taylor Swift wowed on the America Music Awards red carpet in a gorgeous Reem Acra gown that was dripping with gold sequins, and perfectly accentuated her natural beauty.

The 21-year-old country songstress nabbed three huge honors at tonight's show including, Country Album of the year for “Speak Now”, Country Female Artist of the Year, and the biggest award of the night: Artist of the Year.

Swift told the audience after winning the Favorite Country Album honor: "This is crazy! I ended up writing the record by myself, so the fact that you would honor it this way, you have no idea what this means to me."

Congrats Taylor!

We thought it wouldn't happen ... Adam Lambert was BACK at the AMA's tonight after his controversial 2009 performance had reportedly had him banned from the show for life!

Turns out, the media had it wrong. After Lambert kissed his male bass player -- a move that was unscripted, said producers -- during his 2009 performance, ABC received more than 1500 calls from unhappy parents and conservative groups spoke out.

Meanwhile, the show's executive producer, Larry Klein, recently told The Hollywood Reporter, Lambert "was never banned from the show."

Klein went on to say: "That thing got so out of control and was just so out of left field. The kiss wasn't in the script. Did Adam rehearse it on his own and not tell us? I have no idea ... Adam was performing on a stage. Did he get carried away? Absolutely. Was he regretful afterward? Of course he was, but it's over. ABC never banned him and Dick Clark Productions never would."

Not one to wisk down the red carpet without being noticed, Adam spiked his hair as high as it's ever been, donned some sparkly silver pants and a vest, and strutted with the best of 'em, with boyfriend, Sauli Koskinen by his side.