Rihanna, Iggy Azalea, Sam Smith to Perform at iHeartRadio Awards

Kevin Mazur/Getty Images for DirecTV
Rihanna performs during DirecTV Super Saturday Night hosted by Mark Cuban's AXS TV and Pro Football Hall of Famer Michael Strahan at Pendergast Family Farm on Jan. 31, 2015 in Glendale, Arizona. 

Rihanna, Iggy Azalea, and Sam Smith are just a portion of the star-studded lineup at the second annual iHeartRadio awards, taking place on Sunday, March 29 at L.A.'s Shrine Auditorium. Hosted by Jamie Foxx, the awards will also feature performances by Madonna, Jason Aldean, Meghan Trainor, Jason Derulo, Jennifer Hudson, Kelly Clarkson, Snoop Dogg, Nate Ruess, Alesso and Florida Georgia Line.  

Iggy Azalea & Sam Smith Lead 2015 iHeartRadio Music Awards Nominations

Taylor Swift is also scheduled to appear, and the three-hour telecast (airing on NBC from 8-11 p.m. ET/PT) promises "unexpected collaborations from some of the top names in music." The event will also be broadcast on iHeartMedia stations nationwide, and across the iHeartRadio digital music platforms. Fans can participate in the awards by voting through iHeartRadio stations nationwide for the best lyrics, best fan army and renegade categories through Friday, March 20.