Demi Lovato's plainly stated she's cool for the summer, but she and a gaggle of other chart-topping artists have suddenly got us pining after the autumn months.

iHeartRadio officially announced the lineup for its annual music festival today, and with Nick JonasSam Smith and Diplo standing as just a few of Lovato's fellow featured performers, the party could likely give 2014's installment a run for its money.

The show, which celebrates its fifth anniversary this year, has been likened to the "golden ticket of music" by Ryan Seacrest in a promotional video, and the media magnate noted that billions have tweeted and shared past performances.

Janet Jackson, Kanye West, Tove Lo and David Guetta are also on the roster, as are Hozier, Jason Derulo, Disclosure and many more (you can check out the full lineup here).

The iHeartRadio Music Festival will hit the MGM Grand Las Vegas on September 18 and 19 and feature a corresponding livestream. The performances will also air on the CW on September 28 and 29 at 8 PM EST. Tickets go on sale on August 1, but MasterCard holders are eligible for a pre-sale starting today (July 30).

Excited for the big show, or is there someone you think missed the cut? Share your thoughts on the lineup, and hang tight for the September festival!

Confirmed acts:
KANYE WEST
SAM SMITH
THE WHO
COLDPLAY
DEMI LOVATO
DAVID GUETTA
KENNY CHESNEY
THE WEEKND
TOVE LO
LIL WAYNE
FALL OUT BOY
DISCLOSURE
HOZIER
JASON DERULO
DURAN DURAN
PRINCE ROYCE
DIPLO
TREY SONGZ
THE KILLERS
BLAKE SHELTON
NICK JONAS
JANET JACKSON
CHRISTINA GRIMMIE

See what these celebrities looked like when their first albums were released:

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