Lady Gaga with Justin Timberlake

Rihanna, Katy Perry And Lady Gaga Among Top Twitter Moments Of 2011

Rihanna

Weekend Gig Round-Up

LMFAO, Rihanna And One Direction Star On The Ultimate Party Playlist

Rihanna live on NBC

Rihanna, Jessie J And Lady Gaga Dominate Chart In 2011

Jessie J

Rihanna at The NBA All-Star Game

Rihanna, Adele And Lady Gaga Among Biggest News Stories Of 2011

Rihanna

Rihanna 2011

Rihanna, Katy Perry And JLS Scoop Best Gigs Of 2011

Rihanna