Jamie Dornan, who plays Christian Grey in the upcoming film adaptation of Fifty Shades of Grey, has said he doesn't like his physique and still feels like the "skinny kid" he was growing up.

The former Calvin Klein model told Interview magazine, "I don't like my physique. Who does? I was a skinny guy growing up, and I still feel like that same skinny kid."

The 32-year-old actor from Co Down also said that it took him a while to get used to wearing a suit so often when playing Grey in the new movie.

"I'm quite awkward in a suit because I don't have an opportunity to wear a suit very often, and this is a guy who lives in a suit - the best suit."

Fifty Shades of Grey also stars Dakota Johnson and is set for release on Valentine's Day 2015.