NICK Carter broke down in tears on stage at London's O2 tonight - just hours after the death of his younger brother Aaron.
Aaron died aged just 34 at his home in California on Saturday after being found in his bath tub.
Less than 24 hours later his older brother Nick, 42, took to the stage with his band the Backstreet Boys.
However the emotion soon became too much for him as he was unable to sing his verse on their hit Show Me The Meaning of Being Lonely.
His band mates were seen giving him hugs and support and Nick was seen with tears in his eyes.
Midway through the show, the band stopped to pay tribute to Aaron, who had toured with the band during his early pop career.
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An emotional Kevin Richardson said: "Everybody in here, we all grew up together, we've been through highs and lows, ups and downs. You guys have been through it with us. We've been through it with you."
As he spoke, the camera panned in on Nick before AJ McLean gave him a hug.
Nick started to sob as Brian Littrell and Howie Dorough joined AJ to wrap their arms around their grieving band mate.
Kevin continued: "Tonight we've got heavy hearts, because we lost one of our family members yesterday."
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He continued: "We just wanted to find a moment in our show to recognise him. Nick's little brother passed away yesterday at 34 years old.
"He's a part of our family and we thank you guys for all your love, all your well wishes and support."
Kevin struggled to finish so Howie took over and said: "We'd like to dedicate this next song to our little brother Aaron Carter."
The band then performed a stripped down version of their song, Breathe.
Earlier in the show the band sang Incomplete, and the lyrics clearly were too much for Nick as he cried on the final note.
A rep for Aaron confirmed his death and released the statement: "It is with great regret to confirm Aaron Carter was found unresponsive this AM in his home in Palmdale, CA.
"The family has been notified and will be flying out to Los Angeles. Aaron worked very hard towards the end of his life in recovery, to be a good father and to make amends with his family."
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The statement concluded: "Unfortunately without proper recovery facilities available in our country and open borders, this is why we have an epidemic."
Nick paid tribute to his brother in a heart breaking post on social media as he broke his silence following Aaron's death.
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