Liam Hemsworth
The Midnight Sky singer was previously forced to deny rumours the split was due to her having been unfaithful.
The pair cited irreconcilable differences as the reason for their split.
The Thor actor shared a video message on Twitter urging his fans to donate "whatever you can muster up".
She split from husband Liam Hemsworth earlier this month.
The singer and Aussie actor announced they had split earlier this month.
The company behind the Australian actor's new film Killerman said: "Any story saying Liam cancelled press is inaccurate."
“I feel the need to set the story straight," the reality star wrote in an emotional post about his ex.
"Move on, we're not 17, I'm not who I used to be," Miley is heard singing on the heartbreaking tune.
The singer has seemingly moved on with Kaitlynn Carter, after splitting with husband Liam Hemsworth.
“Stop being afraid of women who aren’t afraid to do what pleases them and not other people," the Closer singer wrote on social media.