Justin Timberlake's headlining slot Sept. 21 brought Adam Lambert back to the arena after closing out the previous night with Queen. Watching from a VIP platform, it seemed Lambert was spotted by Timberlake when the singer made his way to stage left for a close-up and the two practically fist-bumped.
Sir Paul McCartney performed a nine-song set during the iHeart Radio Music Festival on Sept. 21, playing such classics as "Magical Mystery Tour," "Live and Let Die" and "Lady Madonna."
Introduced by Khloe Kardashian, Kourtney Kardashian, Kendall Jenner and Kylie Jenner, Drake took the stage on the second night of the iHeartRadio Music Festival.
The now 3-years-old iHeartRadio music festival featured some two dozen major acts — among them: Elton John.
Maroon 5 frontman (and The Voice coach) Adam Levine wooed the crowd with radio-friendly tracks like "Moves Like Jagger."
Britney Spears made an appearance on the second night of the iHeartRadio Music Festival at around 9:20 p.m., promptly exiting the venue before ex Justin Timberlake arrived.
Britney Spears, who confirmed a two-year Las Vegas stint, introduced Miley Cyrus' set, which opened with "We Can't Stop" and closed out with current single "Wrecking Ball."
Following Thirty Seconds to Mars' 20-minute set, led by singer Jared Leto, branded confetti shot out to the crowd bearing the band's logo and album info.
Bruno Mars, headliner of the 2014 Super Bowl Halftime Show, gave a preview of what may come next year with a tight 30-minute set.
Singer Miguel took the iHeartRadio Music Festival stage, singing a slew of his hits.
Country singer Tim McGraw entertained the Las Vegas crowd with hits like "Real Good Man," "Felt Good on My Lips" and "Live Like You Were Dying," as well as newer songs such as "Southern Girl."
Ke$ha, who wore a tight black leotard, was joined by Joan Jett for a rendition of Jett's "Bad Reputation."
DJ Zedd followed Paul McCartney at the iHeartRadio Music Festival in Las Vegas' MGM Grand Garden Arena on Sept. 21.
The singer's set included "We Can't Stop," the first single off her upcoming album Bangerz, as well as 2009 hit "Party In the U.S.A." After an audience member tossed a purple bra onstage, Cyrus said, "I know it's hot as f—, but thanks so much for being here and especially for making my new single, 'Wrecking Ball,' No. 1 on the Billboard Hot 100 this week."
Katy Perry’s 30-minute set was, without a doubt, the best-attended of Night 1, which also included performances by J. Cole, Keith Urban, Muse, fun. and Robin Thicke. Seen on the sidelines: Avril Lavigne, dancing to "Part of Me," and Drake. Miley Cyrus, wearing a red bodysuit, arrived about halfway through Perry's performance with a group of about eight including, according to a source, her mom, Tish.
American Idol favorite Adam Lambert served as frontman for Queen guitarist Brian May.
Members of fun. lent their talents to Queen guitarist Brian May's performance. Taking the lead on "Somebody to Love" was clearly a major moment for singer Nate Ruess, who at one point grabbed on to fun. guitarist Jack Antonoff as if to confirm that it wasn't all a dream.
Avril Lavigne, who wed Nickelback frontman Chad Kroeger in July, rocked out at the fest.
Chris Brown's erstwhile rival Drake was spotted in the audience during the set.
The Norwegian viral sensations signed with Warner Music Group ahead of their performance Friday. The brothers, Vegard and Bard Ylvisaaker, performed their YouTube hit "The Fox" at the MGM Grand Garden Arena in between sets by Chris Brown and Katy Perry.
J. Cole and Miguel smile during their performance.
An introduction of Katy Perry by Kate Hudson did not mention the fact that the pop star’s given name is Katy Hudson (changed around the time of Almost Famous so as not to confuse), but the actress did note how “beautiful, talented, lovable and sparkling” Perry is, adding, “She's got the eye of the tiger and tonight, right here, we get to hear her roar.”
Muse brought the rock on Friday night.
P. Diddy looked sharp during his performance.
Robin Thicke charmed the crowd on Friday night.
The reunited TLC wowed the crowd.
The American Idol judge reached out to the crowd during his performance Friday night.
The country stars took the stage Saturday.