My bro can confirm it too, we where playing yesterday and I was hosting, and the same thing happened for him.
I am in 1.8-pre, I think I set the wrong version there, let me fix that. Also according to my bro, the new minecraft default skin is called Alex, and that was the skin showing.
Same in 1.8-pre1. I just reported it, and was marked as a dupe to this issue.
My bro can confirm it too, we where playing yesterday and I was hosting, and the same thing happened for him.