The Twilight films made Robert Pattinson a worldwide heart-throb, but before fame came knocking, a 14-year-old Pattinson appeared in a Chinese fashion magazine modelling underwear.

Regrets? He has a few.

"He totally is embarrassed with those modelling shots and he thinks that they look horrifying. He was fine with it when he did them but looking back at them now, it's both a little funny and a little scary to see," a source told Hollywood Life, "His friends are definitely making fun of him over them."

The 26-year-old actor shot to fame as Cedric Diggory in the 2005 film Harry Potter and the Goblet of Fire; three years later, he was cast as the mysterious Edward in Stephanie Meyer's Twilight trilogy.

"I wasn't shy, but Robert was! He barely spoke at all," British model Lucy Flower said of the 2001 photo shoot.

Having now safely put underwear modelling behind him, Pattinson is looking to do the same with his Twilight vampire image. His next film project, The Rover, is a thriller in which he co-stars with Guy Pearce.

Pattinson was spotted recently wearing a black shirt and brown pants covered in soil, for his role as a new recruit to a gang.

"It's added lots to the performance - being covered in dirt, pouring sweat, with tons of flies around, you lose your inhibitions quite quickly,'' he said on set.

On a personal front, Pattinson has reportedly told his on/off girlfriend Kristen Stewart not to visit him on set.

"Rob doesn't want her to visit, he felt like they needed space. He wants a break," a source told In Touch Magazine.

"She was calling and texting him constantly - if he didn't respond she would go off the handle. So he just stopped responding," the insider added.

Click here to take a look at the Pattinson's past modelling pictures.