• One Direction at 102.7 KIIS FM's Jingle Ball

One Direction at 102.7 KIIS FM's Jingle Ball (Photo : Getty Images for iHeartMedia/Kevin Winter/)

One Direction's performance at 102.7 KIIS FM Jingle Ball 2015 Los Angeles was their last gig and Selena Gomez arrived at the event in sexy black dress with a high slit on Dec. 4.

Gomez, 1D, The Weekend, Ellie Goulding, 5 Seconds Of Summer and Meghan Trainor were lined up to perform on Dec. 4. According to Billboard, the British boy band appearance at Jingle Ball 2015 was their last gig concert.

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Niall Horan, Harry Styles, Liam Payne and Louis Tomlinson sang "Story Of My Life," while Gomez in black one piece and fishnets, performed her hit singles "Same Old Love", "Kill 'Em With Kindness", "Hands To Myself" and more. In a video, the 23-year-old singer- actress with a group of male dancers danced some sexy moves on stage as she sang her hit songs.

5 Seconds of Summer was the first artist to perform onstage. The Australian band made their fans scream by singing their "Hey Everybody!" and then followed their hit single "Amnesia" from their first album. They also sang "Jet Black Heart" and "She's Kinda Hot."  

Conrad Sewell also invited to perform at Jingle Ball 2015. "It's been a great year for breakout artists," he told the publication. 

102.7 KIIS FM's concert event has become abuzz not only because of the great performances, but also because of Gomez and Horan kissing rumors.

The young stars were reportedly spotted kissing at Jenna Dewan-Tatum's 35th birthday, according to E News. The two were seen leaving the event venue together at the same time.

Meanwhile, Gomez and her ex-boyfriend Justin Bieber have been previously speculated have back together because of the video that went viral on Instagram. In the video, "What Do You Mean" hitmaker serenaded his 23 year-old ex-girlfriend at the Montage Beverly Hills Hotel.