Hailey Baldwin's uncle wants to raffle off an invite to her wedding to Justin Bieber.

Billy Baldwin

Billy Baldwin

The 21-year-old model is believed to have already married the 'Love Yourself' singer but they are also planning a religious ceremony, and Billy Baldwin thinks he could raise a lot of money for charity if he sold tickets for people to be his date on the big day.

He joked to TMZ: "I wanna auction off, like raffle, on the Internet, like, 'Be Billy Baldwin's Date to the Bieber/Baldwin [wedding] part.

"How much money could I raise for a kick ass charity? If I sold $20 raffle tickets, I'd make $20 million dollars worldwide with all their fans."

The 'Backdraft' actor is a big fan of 24-year-old Justin.

He said: "I've had a chance to hang out with him recently and he's a really cool guy. It was nice to sit for a couple of hours and have a conversation with him. He's a very cool guy, super talented, and he's got a huge heart. They're madly in love with each other."

Meanwhile, Hailey's cousin Ireland - the daughter of Alex Baldwin and his ex-wife Kim Basinger - recently admitted she felt her relative's engagement had been a "long time coming".

She said: "It was meant to be a long time ago. It was just a long time coming, and we're all like, 'Alright, thank god, let's move forward.' They're so in love and they really do a lot of good for each other, and that's the most important thing for me, that he makes her so happy. They just bring out the good in each other, they really do. I think they do a really good job of checking each other when one desperately needs to be checked and told, 'You're out of line.' I think they really, really do care about each other so much and care about what others and what their families think of them."