The Voice Australia judge became greatly moved by a performance of Sara Bareilles' Gravity from contestant Sarah Stone, who dedicated a song to her missing mother.
Sarah's mother vanished when the contestant was just 17 years old.
As she sung the words 'something always brings me back to you', which brought on her own tears, Boy George was seen shedding a number of them himself.
Boy George was also seen telling the talented 23 year-old, 'I look at you and I see there's so much vulnerability and pain in your eyes.
'The more fragility and realness you can bring to this performance, the more people are just going to fall madly in love with you.'
Once Sarah wrapped her live performance, George told her, 'You know, you are Australia's daughter and God bless you, I hope everyone votes for you.
'That was such a beautiful performance, I'm struggling.'
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