The pair reunite at the awards ceremony to perform the single
Sunday promises to be a "Monster" of a night
Jay-Z, Macklemore & Ryan Lewis, Avicii, Icona Pop and Eminem also scored multiple nominations
The performers will hit New York, Detroit and Los Angeles in August
No better way to celebrate Valentine's Day than with two star-crossed lovers
Songbirds team up to make beautiful, half-naked music together
Overall low selling year for albums, but singles have thrived, according to Billboard
Rihanna is the most-streamed female artist for second year in a row
From Taylor Swift to Justin Timberlake, all of the awesome people who took home yet another trophy on Sunday night, yay them!
Rihanna shows why she earned her Icon award with dramatic "Diamonds" performance
The pop star is nominated for four other awards, including Artist of the Year
"The Monster" vs. "Incredible": Who sung it best?
The artist addressed the growing normality of female singers relying on their bodies, rather than their voices, to get attention
The singer and bodyguard were held following a altercation with another man outside a Washington D.C. hotel
The singer posed in front of the Sheikh Zayed Grand Mosque during a tour stop in the United Arab Emirates
In this week's edition, Rihanna's latest sting operation via Twitter, M-Bay attacked with an A/C and the least talked about movie casting around the internet...
This is the second arrest resulting from singer's social-media use
The pop phenom, who opens Friday in "Runner Runner," has suffered some domestic misses but has become a force overseas
Executive produced by the pop star, "Styled to Rock" will debut in October
Mila Kunis, Jennifer Aniston, Quentin Tarrantino, Rihanna and Jesse Eisenberg were also victims of outrageous interview tactics
The actor's rock band, 30 Seconds to Mars, performed its own rendition of the hit pop ballad for BBC Radio 1
Michael Moore, Lena Dunham, Olivia Wilde express outrage and sympathy for Trayvon Martin's family
Seth Rogen and Evan Goldberg's buddies make deadly cameos in the "Superbad" writers' directorial debut
A familiar tale seems to be unfolding in a promo for new "Law & Order: SVU"
The Grammys should always change, says producer Ken Ehrlich -- even if some of the changes will confuse guests at the Staples Center on Sunday
Two-hour season finale of "The Voice" will air Dec. 18
Rihanna's sit-down with Oprah, which brought in 2.5 million total viewers, was bested only by Winfrey's interview with Whitney Houston's family in March
"I just felt that he made that mistake because he needed help," Rihanna says of her former boyfriend
Brittany Snow, Alexis Knapp and Rebel Wilson all appear in this adaptation of Mickey Rapkin's nonfiction novel
One Direction, Katy Perry and Frank Ocean also score multiple nominations