In the episode "Arnold the Entrepreneur", Arnold and Sam go door to door selling bug spray. In one instance, the door is opened by an attractive woman wearing a pink leotard. Does anyone know the name of the actress who played this woman?

Hey Stella could the lady be named Janna Lowell. This is from Different Strokes on Line. You can also find the episode at TVTome.

http://www.sitcomsonline.com/diffrentstrokes.html
159. Arnold The Entrepreneur (11/17/84 - #713)

Entrepreneur Arnold reluctantly allows Sam to be a part of his new scheme, when Sam realizes only Arnold will reap the profits, he breaks up the partnership and becomes the competition. Herve Villechaize guest stars as a "victim" of Arnold's sales pitch.

Cast: Conrad Bain, Gary Coleman, Todd Bridges, Mary Jo Catlett, and Danny Cooksey

Guest Stars: Edie McClurg as Betty, Janna Lowell as Ellen, William McDonald as Joe, and Herve Villechaize as himself

That is probably her.

Adam and Sobe, thanks for the info.

Actually, I've seen the credits before but I wasn't sure if it was Janna Lowell because the woman in the leotard was never referred to by a character name. In other words, Arnold and Sam did not call her Ellen.