JUST ADDED: 5 Seconds of Summer will be rocking the stage at this year's iHeartRadio Music Festival Village in Las Vegas! The band sat down with Ryan Seacrest to break the news. Click here to buy your tickets now, before they sell out!
Thicke, whose "Blurred Lines" has been dubbed the "song of the summer" by some, joins a star-studded roster that includes Paul McCartney, who was just also announced this week, Justin Timberlake, Katy Perry, Elton John, Tim McGraw and more.
Ryan Seacrest will host the two-day music event at the MGM Grand Garden Arena from September 20th to September 21st. Thicke is expected to perform on the first night of the festival.
Tickets are sold out, but there are a number of ways you can win your way to Vegas for the festival's third epic year. CLICK HERE for details
In addition to the nighttime shows, this year will mark the first-ever iHeartRadio Music Festival Village taking place Saturday afternoon, September 21st on the Las Vegas Strip at The Lot across from Luxor. The Festival Village will feature live performances on two stages by nearly a dozen popular and up-and-coming artists, including Miley Cyrus, The Wanted, Jason Derulo, The Band Perry, Avril Lavigne, Krewella, Cher Lloyd, twenty one pilots, Pete Tong, AWOLNATION and a special guest appearance by Ne-Yo.
This year's iHeartRadio Music Festival will be broadcast live across Clear Channel radio stations in 150 markets. It will also air as a two-night special on The CW Network on September 30th and October 1st.
Photo: Roger Kisby for iHeartRadio