Maybe she got some tips from her The Princess Diaries co-star Julie Andrews?

Anne Hathaway is working a posh British accent in the trailer for One Day, a flick based on the best-selling novel of the same name.

In a style reminiscent of When Harry Met Sally, the film follows the relationship of Em (Hathaway) and Dex (Jim Sturgess) on one day a year for 20 years, following how their relationship changes.

What do you think of Anne's accent? Spot on or total rubbish?

See what big movie Hathaway has lined up next after the jump!