Demi Lovato

The Colombian star Shakira, who could not attend the ceremony of the AMA to receive the award, beat Daddy Yankee and Enrique Iglesias, who himself was present and even offered a lively show with Pitbull.

Justin Bieber captured two trophies, beating Eminem and Usher in the category of favorite artist pop / rock.

The teen idol was not taken lightly the successful completion of two veteran multiplatinum success.

''I can not stop smiling, this is incredible. I really do not know how this is possible because I sang Eminem since he was three and Usher is my mentor. So this is great,''said Bieber, who also won the statuette to the new artist.

Other winners included the Black Eyed Peas and Taylor Swift, but Sunday's ceremony was both a showcase for artists with new albums as a celebration of the great achievements of 2010.

Rihanna, her hair painted ruby red, opened the show with a colorful and sexy performance in which he performed a medley of songs from her latest album,''Loud,''including the No. 1 hit''What's My Name'', dressed in a bra and what looked like a scarf around the hips.

''This is unbelievable!''Said an exuberant Rihanna, who danced on stage after receiving her award for favorite artist soul / R & B.

Pitbull Iglesias sang with success''I Like It''accompanied by a large team of drummers. The Spanish began to dance to the public and even singing Swift was seen standing from his seat.

The Black Eyed Peas, AMA winners of the band's favorite pop / rock, offered a high performance from singing boxes cherry on the stage with her new single,''The Time.''

Some of the most significant events came from artists who were not nominated but they have new albums. Diddy Diddy sang with his band Dirty Money "from his upcoming material, while Kid Rock gave a moving acoustic rendition of''Times Like These,''his song of encouragement to his hometown of Detroit for the economic problems that has traversed your new CD''Born Free.''

Pink, pregnant, offered one of the most outstanding events of the evening. Unlike recent performances remained trapeze with feet on the ground to sing his new song,''Raise Your Glass''but surprised with a number of high-energy choreography.

Katy Perry gave an explosive performance in interpreting Firework''''accompanied by fireworks.

Swift, winner of last year's award for entertainer of the year, took this time for favorite country artist. With the smooth and blond hair instead of his usual curls, simply said:''I just want to thank the fans.''

Then performed her new single,''''Back to December, also sang at the CMA Awards earlier this month. This time, however, gave a twist to incorporate part of OneRepublic's song''Too Late To Apologize.''