Zac Efron Heads Into Heathrow

Zac Efron keeps warm in a gray sweater as he arrives at Heathrow airport in London on Wednesday morning (March 25).

The 21-year-old actor is make a worldwide trip to promote his new flick, 17 Again.

Zac will be making an appearance on The Graham Norton Show tonight along with British comedian and actor David Walliams. The show will air at 11PM on BBC.

17 Again will hit theaters on April 10th in England. Also pictured below: Zac heading out of Paris.

15+ pics inside of Zac Efron arriving in London…