So how did Lady Gaga mesmerize her fans at the iHeartRadio Music Festival?

Final performer at the iHeartRadio Music Festival at the MGM Grand Garden Arena in Las Vegas, she stayed on the stage for more than an hour, and who was complaining? Not a single soul.

They told me I was only allowed to play for 45 minutes, she told the crowd. But I think you're all pretty drunk so you probably don't know what time it is, do you? an Entertainment Weekly report said.

Gaga set the stage on fire giving her hit numbers one after the other including Judas, You and I, Just Dance, and Bad Romance.

The 25-year-old singer got the crowd emotional when she performed her single Hair, dedicating it to her special fan- 14-year-old Jamey Rodemeyer, who committed suicide last weekend after being bullied for homosexuality.

Gaga, a strong supporter for the LGBT cause, said: Jamey I know you're up there looking at us, you're not a victim, you're a lesson to all of us, I know it's a bit of a downer, but sometimes the right thing's more important than the music, let's do this one for Jamey.

As Gaga performed, Jamey's picture stayed on one of the huge screens throughout much of the song.

The tribute was emotional for lots of the crowd and Gaga, along with a lot of concert-goers could not hold back the tears.

Gaga sang Alejandro, Telephone, and Papparazzi, followed by Stand By Me and King of Pain with Sting, before Gaga ended the set and said she was going to follow Sting off stage because he's cute, the report said.

After giving a mesmerizing performance of Edge of Glory, Gaga left the stage again, only to come back with Born This Way.

Gaga undoubtedly rocked the crowd with her performance even though there were a lot of other performers before her.