Evan Rachel Wood plays the daughter of Kate Winslet's character in the upcoming HBO mini-series 'Mildred Pierce'--and the risqué role called for the young actress' first nude scene. But lucky for Wood, her co-star has stripped down on film several times before and was there to lend support.

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

Winslet also told the actress to cover up as much as possible: "I looked at Kate and she was like, 'You've got to do it. Trust me, it's so brave,'" Wood said in an interview with Fancast.com. "'Put a merkin on and you'll be fine.'" (A merkin is a pubic wig.)

The 'Titanic' star's final piece of advice? "You keep the room as empty as possible," Winslet told Wood. "Just kind of being there for her, really, and letting her know there was someone to hold her hand and throw a robe over her at the right moment...made her feel better."