A young woman has filmed the heartwarming moment she asked the man who raised her to adopt her.

Misty Nicole Knight asked a family member to film the moment she asked Ryan - who is believed to have been married to Misty's mother, Nicole - to officially become her father.

Misty, from Illinois, handed Ryan a box with a note stuck to it, asking him to read it aloud.

I just want you to know that you are the most amazing man I have ever met. The note Ryan read aloud

Ryan and Misty at a rock concert Credit: Misty / Facebook

Misty then presents the final gift - an application for adoption.

Ryan gives Misty a hug before bursting into tears, as the rest of the family clap.