Did Ellen Burstyn really get naked in this?

I caught part of it on the Movies Channel last night. I like the Movies Channel for many reasons, but one is that they don't cut out nude scenes; they just blur the "naughty bits" when someone disrobes. (Of course in a rational world they'd just show the nudity and the world wouldn't end.) I got a glimpse of two women (presumably the female leads) frolicking in bed, with the Nicholson character peeping in, but it went by too fast to tell me who they were.