Los Angeles, Aug 24 : Actor Robert Pattinson thrilled patients at the Children's Hospital here when he recently paid a secret visit to them.

The 27-year-old thrilled the patients, including two huge “Twilight Saga” fans suffering cystic fibrosis, reports people. com.

"We couldn't help laughing and smiling when one of the patients was so starstruck that she couldn't speak. You could tell it meant the world to her - she was tearing up and smiling ear to ear," said Lyndsay Hutchinson, the hospital's public information officer.

"The other little girl teased him relentlessly and begged him to do an American accent. They were instant friends,” added Hutchinson.

Pattinson also spent time in the hospital's Teen Lounge where he joined patients who were decorating picture frames.(IANS)