I don't think we ever see anyone in soaps wearing much casual stuff. I mean, in today's soaps, of course there are people who were it sometimes, but most of the time it's suits for the men, and some kind of business dress or at least semi-formal stuff for the women.
In DS, the only character I can even think of maybe having an inkling about wearing jeans, would be Buzz. And I'm not sure what you would consider casual or not, but Vicki and Carolyn wore casual dress clothes more of the time. But, I guess that's still considered "Dress" clothes.