Shelly is a co-worker of Chandler's, portrayed by Nancy Cassaro.
In "The One Where Nana Dies Twice", she mistakenly assumes that Chandler is gay and tries to set him up with another co-worker, Lowell. She apologized for her error and tells him that he just had a vibe that hinted otherwise. Later on, Lowell was able to tell her that Chandler was not gay and she misread him.