Irish actor Simon Delaney says that he instantly hit it off with his on-screen brothers Vince Vaughn and Bobby Moynihan in upcoming comedy Delivery Man.

Speaking to RTÉ Ten, Delaney said: "The three of us just hit it off pretty much from day one and especially myself and Bobby just really got on so well to the point where I remember Bobby's girlfriend was on set one time and she said 'Jesus are you guys sure your parents didn't meet back in the '70s because you could so be brothers'."

Getting on so well off-screen made their relationships in the film all the more authentic, "We kind of got the closeness of family right but we also got the idiosyncrasies, like, if you're the older brother, you're the younger brother, you're in trouble and you need my help, I'm always helping you, that sort of family thing came through."

Delivery Man is out this Friday, January 10th and also features How I Met Your Mother star Cobie Smulders.