ContactMusic — Rihanna Calvin Harris and deadmau5 are to headline a charity concert in Los Angeles later this month The acts will perform at the House of Blues in Los Angeles on February 12 - the same night as the Grammys - for the exclusive show which will benef..... more info

Gigwise — Benefit show proceeds will go to Children's Orthopaedic Centre at L.A Hospital... more info

Perez Hilton — After breaking news that Adele will have her first post-surgery perfomance, how else can this year's Grammys get bigger?! Exec. producer Ken Ehrlich states that the 2012 show will have 17 to 18 production pieces performing 22 songs! With a lineup inc... more info

L.A. Times - Pop & Hiss — Deadmau5, Rihanna, Calvin Harris are among the artists who will perform at a benefit concert on Grammy night. more info

411 Mania — He'll be joining Rihanna... more info

Gigwise — Pair will attend the event... more info

411 Mania — She dropped almost $160,000 on it... more info

Gigwise — Joins Rihanna and J Cole... more info

Perez Hilton — Lindsay will be SO jealous!!!! According to a new report, Rihanna has picked up a Marilyn Monroe portrait (above) from artwork company Gemstone Creative. RiRi purchased the piece for nearly £100,000. The portrait is said to "constantly" change color... more info

Topix — LMFAO and Justin Bieber were also winners. According to published reports, Adele, who didn't attend, won two trophies: International Revelation of the Year and International Song of the Year for "Someone Like You." LMFAO also took home two awards: Mu... more info