05/18/2009 AT 12:15 PM EDT
Mary-Louise Parker has always been fine with the sex scenes in her role as Nancy Botwin, a marijuana-selling suburban mom in the Showtime series Weeds
, but she thinks that a recent nude scene of her in the bathtub took things a little too far.
"I didn't think I needed to be naked," she tells MORE magazine
in its June issue. "I fought with the director about it, and now I am bitter. I knew it was going to be on the Internet: 'Mary Louise shows off her big nipples.' I wish I hadn't done that. I was goaded into it."
The show's co-executive producer, Roberto Benabib, defended the moment, stating that the nudity was necessary to convey the character's vulnerability. "We felt at that point in her life, defenses had been so thoroughly stripped away," he says. "There was a nonchalance to the nudity that informed the scene … I thought it was wonderful, one of the five best scenes Mary-Louise has ever done [on Weeds
Despite being bitter over the nude scene, Parker still very much enjoys playing her character on the show. "I like it the more extreme it is," she says. "But I don't like it when it's crass and crude for humor's sake, and I don't like when it's sentimental, when she's a sweet mother. To me, she's not that."
Parker also talks about the pressures to look young in Hollywood, but she's not giving in to the knife anytime soon. "Somebody told me that they'd read I had all this work done, and showed me a picture and it was totally airbrushed ... it made me so mad," she says. "I don't like what that says to other women. I'm 44 and I look okay for 44. I'm not trying to look 34."