Kate Winslet helped Evan Rachel Wood get naked on camera.

Although the 23-year-old actress was nervous about stripping off for her role in new mini-series 'Mildred Pierce' at first, her seasoned co-star soon had her derobing with her words of encouragement on set.

Wood told 'E! News': "She coached me through my first nude scene. I mean, she's done it all. She was literally next to the camera going [thumbs-up]."

The 'True Blood' star also revealed the British actress, who plays Evan's mother in the show, even suggested she wear a pubic wig to protect her modesty.

She told Fancast.com: "I looked at Kate and she was like, 'You've got to do it. Trust me, it's so brave. Put a merkin on and you'll be fine.' "

Winslet - who has been naked in several movies including 'The Reader', 'Titanic', 'Hamlet' and 'Little Children' - was quick to realise the naked scenes were pivotal to the storyline, and she made it her priority to ensure her co-star was happy to do them.

The 35-year-old actress said: "[I was] helping her to fully acknowledge the weight of that within the story. And also just talking to her about how to find a level of confidence.

"You keep the room as empty as possible and just kind of being there for her, really, letting her know there was someone to hold her hand and throw a robe over her at the right moment. That all made her feel better."

The first episode of 'Mildred Pierce' - which is comprised of five parts - is being broadcast on HBO on March 27. It is an adaptation of James M. Cain's 1941 novel of the same name.