Los Angeles: Pop sensation Lady Gaga paid tribute to a bullied gay teen who reportedly took his own life, by dedicating her hit tune 'Hair' to the young fan during a performance.

The 25-year-old singer launched a campaign to make bullying illegal after learning 14-year-old fan Jamey Rodemeyer allegedly committed suicide last weekend, following years of cruel taunts from peers over his sexuality, according to reports.

And the 'Judas' hitmaker honoured him at the iHeartRadio music festival in Las Vegas, which boasted performers including Jay Z, Jennifer Lopez, Coldplay, Bruno Mars, and Steven Tyler.

"I lost a little monster this week and I'd like to dedicate this song to him. Tonight, Jamey I know you're up there and looking at us and you're not a victim. Bullying is for losers. Put your hands up for Jamey," she said.