Justin Bieber performs onstage at the Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California.
Jennifer Lopez performed in Giambattista Valli.
Kelly Clarkson showed off her shape in a red sequin dress on stage.
Vanessa Minnillo opted for a white Aje mini with a sexy cutout.
Jennifer Lopez showed some leg in a lacy Zuhair Murad look.
From Taylor Swift to Selena Gomez, so many stylish stars walked the red carpet at the 2011 American Music Awards! Check out our best dressed picks & VOTE!
The 2011 American Music Awards red carpet featured so many stylish stars. From Selena Gomez in her sexy yet chic Armani frock to Jennifer Lopez in lace and Taylor Swift in a golden Reem Acra get-up, check out who turned up and let us know who you think deserves to be the red carpet queen.
Katy Perry wore a couture Vivienne Westwood drape dress.
Taylor Swift sparkled in a golden Reem Acra gown.
Heidi Klum shined in a silver Giles sheath.
Jennifer Hudson opted for a silver Jenny Packham mini.
Audrina Patridge kept it sexy and chic in a Joey Tierney strapless mini.
Sarah Hyland in Amen.
Selena Gomez looked sleek and chic in Armani.
Justin Bieber and Selena Gomez at the 2011 American Music Awards. (Getty Images)
American Music Awards 2011 Best Dressed: Selena Gomez, Taylor Swift & More PICS