Five years after falling in love on the set of Disney hit High School Musical, Zac Efron and Vanessa Hudgens made a very grown-up couple on the red carpet tonight.

The affectionate pair were out in force for the Hollywood premiere of the 22-year-old actor's latest big screen offering, Charlie St. Cloud. Vanessa, 21, who was dressed in a stylish oyster-coloured silk frock, played the supportive partner and at one point affectionately rested her head on his shoulder.

While the pair have been going strong since 2005, Efron insists there will be no wedding bells any time soon. Zac told US entertainment show Extra:

"No, I'm not gonna get married for a while. 'I think I've always said I'm not gonna get married 'til I'm 30, I'm gonna wait. He added: 'I wouldn't want that kind of commitment or pressure at this point.'

Efron admits to being a bit nervous about his role in the new movie Charlie St. Cloud. He plays a teenager who has to chose between keeping a promise he made to his brother, who died in a car accident, or trying to get the girl he loves.

The teen heartthrob also admits that Vanessa has got him into doing yoga as a way to work out. He added: 'She's into yoga and all the girly ways you can work out. 'She's getting me into that stuff, too.'Charlie St. Cloud hits cinemas in the US on July 30.