Watch Britney Spears perform her greatest hits including "Toxic," "Womanizer" and more at the iHeartRadio Music Festival, above.

ORIGINAL POST: The second night of the iHeartRadio Music Festival takes place tonight (Saturday, September 24) at the T-Mobile Arena in Las Vegas, where superstars like Britney Spears, Ariana Grande, Zedd and Pitbull will perform some of their biggest hits onstage.

Thankfully, you don't have to be Sin City to catch all the exciting performances—you can watch from home online, or even listen to the show on the go, thanks to the magic of streaming!

Want to watch the performances online? You can stream the iHeartRadio Music Festival live on starting at 7:30 p.m. PST/10:30 p.m. EST. You can also download the CW app for free from the Apple Store or Google Play Store and stream the show on your device.

Want to listen to the performances on the radio? You can tune in tonight on, use the iHeartRadio Music Festival '16 Radio widget, or listen to the show as it's broadcast live across select iHeartMedia radio stations nationwide. You can also listen to the iHeartRadio Music Festival using the iHeartRadio app.

Additional performers Saturday evening include Sting, Usher, Florida Georgia Line, Tears For Fears and Cage The Elephant.

Night 1 of the festival took place on Friday (September 23) and saw performances from U2, Drake, Sia, Twenty One Pilots, Sam Hunt, Billy Idol (including a surprise guest appearance by Miley Cyrus) and OneRepublic.

Britney Spears Through the Years:

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