AMAs: Meghan Trainor, Charlie Puth make out onstage

Meghan Trainor wasn't able to control herself while performing with Charlie Puth at 2015 American Music Awards as they ended up lip-locking onstage.

It was when the 23-year-old singer joined the 'All About That Bass' singer on the stage to sing their collaboration song 'Marvin Gaye,' the duo finished the song, they went in for a kiss that turned into an extended make-out session as the crowd looked on.

Puth collaborated with the 21-year-old singer for a medley of her platinum single 'Like I'm Gonna Lose You.'

American Music Awards 2015 is being held in Los Angeles.