Dornan casting proves popular with 'Grey' fans

“Once Upon a Time” star Jamie Dornan will play male lead in “Fifty Shades of Grey” film.

As I was told by my Hollywood sources close to the production of the “Fifty Shades of Grey” film — a replacement was quickly tapped to replace Charlie Hunnam as the male lead in the much-anticipated movie, based on the wildly successful bestseller.

The selection of Irish actor Jamie Dornan (“Once Upon a Time,” “Marie Antoinette”) also seems to be snaring much better initial reviews — if Twitter is any indication — than did Hunnam, when he originally was announced to portray Christian Grey.

Even celebs like Lena Dunham weighed in Thursday, tweeting, “I’m a monstrous @JamieDornan! fan.”

Many expect the “Grey” casting will help propel the hunky actor — who also has already carved out a major career as a top male model for Dior Homme and Calvin Klein — into the front rank of Hollywood heartthrobs.

“He already has a loyal fan base,” said a source close to the film’s production. “This will only ensure he’s going to be totally huge.”

†Along with the attention Dornan has received for his modeling and acting — he also snared a fair share of headlines due to his former two-year relationship with Keira Knightley. “Unlike some of the candidates to replace Hunnam, Jamie will be able to handle the enormous press interest this role will bring. He gets the celebrity thing and knows how to handle the spotlight,” added the source.

“Also, [Dornan’s “Fifty Shades of Grey” co-star] Dakota Johnson is thrilled about him being cast as Charlie Hunnam’s replacement.