|Fisher in a Playboy Bunny costume|
Yes, Fisher did appear in Playboy but not in the way you're thinking. Get your mind out of the gutter, you won't find topless pictures of her here, Carrie is a princess after all! Well, you could check her nudity out in the film Shampoo.
Back in Playboy's prime, people used to claim to read the magazine for its articles - one of those such articles featured Carrie Fisher. It's a very interesting read as it gives an insight into her mindset. It took place following the release of The Empire Strikes Back so people would have been drawn to the article and would have thus been exposed to Carrie's thoughts on her mother's breasts, whether Darth Vader is gay and how Warren Beatty embarrassed her. No, she doesn't reveal her bra size.
On doing a nude scene with Warren Beatty in the film Shampoo:
At the time I did Shampoo, I was a virgin. I knew nothing. They would kid me. Warren [Beatty], Hal [Ashby] and Robert [Towne] would all fall apart laughing, and I would, too. My line to Warren was “Want to fuck?” and I was supposed to be hostile and mean and power-crazy. I would say that line and fall apart, because Warren had told the others that I didn’t know what I was talking about and that was very funny to them.
On Vader being gay:
The guy’s not attractive. He has funny hair. He’s not black. He may be neuter. A lot of this is open to people’s interpretations. Maybe he’s gay. Vader is gay and he’s embarrassed about some tattoos he had put on his face. He got drunk one night. No, he has some kind of problem with facial hair. What can I tell you? You’ll find it out in the third film. You had a glimpse of him in The Empire Strikes Back. He looked like some vegetables gone bad.
On Debbie Reynold's breasts:
For Star Wars, they had me tape down my breasts, because there are no breasts in space. Camera tape, gaffer tape. At the end of every day, I was going to draw a lottery and one of the crew could rip off the tape. I never did it, though. Actually, my mother is more famous for her breasts than I could ever be for mine. Groucho Marx, in front of Nate ’n Als, once told me she had a great chest. He was going to visit her in the hospital to see if they were real. He also said that on the Cavett show. So I have some. I have two.
These responses to some of the questions asked by Playboy Magazine display a well rounded sense of being awake to the whims and ways of world. A large part of that is clearly informed by Fisher's intelligence and the immersion into the world of show business by way of her famous parents certainly had a hand. To be talking about someone being gay (even if a fictitious film villain), while not unheard of in the 1980's, was possibly a novel thing for the largely male audience of the magazine.