Tom Cruise is celebrating his birthday with fans!The actor rang in the big 6-1 at the premiere in Sydney, Australia, with some of the film's stars and a bevy of excited Australian fans by his side.«It was great to spend my birthday with fans today. Thanks for coming out to the premiere!» Cruise captioned the tweet on Monday, which featured photos from the red carpet, a fireworks show and pics of the actor signing autographs for fans.It was great to spend my birthday with fans today.