"Have you dressed yet?" Isn't correct in (at least my form of) American English. Does this mean "Have you gotten dressed yet"?
Yes, sounds fine to my British English ears. "Have you got dressed yet" is also fine for us. We don't say "gotten".
Yeah, the got/gotten thing is a common point of confusion. I'll stick to the British form, but that's good to know.
I'm Canadian and it sounds normal to me. But "gotten dressed" sounds normal to me too. Weird. I don't know if I've been saying things incorrectly or if it's just a difference in areas.
That sounds a little marked to me, a little formal. I'd be more inclined to use "get dressed" rather than "dress": "Have you got dressed yet?, I'm getting dressed, I've got dressed".
Sure, it's probably not the way most people would say it, but it's not incorrect (in UK English) as miacomet was asking. I was just trying to explain Duo's suggested translation, and the possible use of "to dress" as a verb. I agree that it sounds a little old-fashioned, but I wouldn't say it's beyond modern use yet.
Yeah, you're right. I just thought when you said it's "perfectly normal" to say that you meant you say it every time, haha.
What's wrong with "did you get dressed?" The "Did you" and "I did" worked on other sentences