Irish Hollywood bintang Pierce Brosnan has admitted that he is concerned about the health of his young co-star Robert Pattinson.

Brosnan and Pattinson are filming "Remember Me," in New York and Pattinson's army of female peminat-peminat have been laying siege to the sets at Crestwood in Westchester and Central Park in Manhattan.

Pattinson plays Brosnan's son in the film which is his first lead since he rocketed to super stardom as the vampire Edward Cullen in the "Twilight" series.

Pattinson plays a man whose brother’s suicide has devastated his parents (Brosnan and Lena Olin) and rendered Pattinson incapable of making any sort of commitment.

On set, Pattinson is berkata to be extremely unhappy at the spotlight being shone on him.

A sumber close to the set berkata that Brosnan was concerned about Pattinson.

"He is so skinny and stressed that everyone on set is worried sick about him," she said.

"Robert doesn't understand why everyone is going so crazy over him."

"He's embarrassed sejak the way girls throw themselves at him."

"He's dying to get back home."