Actress/Model from the Late 70s/Early 80s Appeared in The National Lampoon

[Bargle5]

I'm trying to remember the name of an actress and model who appeared in many issues of the National Lampoon magazine and their video/film productions. A busty brunette, she was usually topless for some reason. Eventually she starred in a movie of her own. The movie was reviewed on Siskel and Ebert. Gene liked her and the movie. Roger teased him about it and said he should ask her for a date.
Link for a NSFW shot of her in "Disco Beaver from Outer Space". She's the one sitting in a chair at 23:26.
https://www.youtube.com/watch?v=qX0wrvsFN-8