I didn’t see this coming. She’s in her 50s and has not done any nudity for about a quarter of a century. Her last topless appearance was in Dancing at the Blue Iguana (2000).
As far as I know, her only other screen nudity came in a little-remembered 1999 film called Guinevere, and that was in the background of a photo within the film.
That’s Grace Una on the far left. Sarah Polley is the blonde in the foreground. Guinevere got some good reviews and won a screenwriting prize from the Sundance jury, but never got a significant release.