the original text for "made themselves coverings" is the word "chagowr" which means loin covering. So Eve was still toppless AFTER the sin. Try telling your sunday school class that.
And where did they bathe? Nudity around water was sooo common. Don't be a Pharisee and add rules/regulations to the Bible. The very poor had no clothes, they may have been ashamed, but only about their life status not about their body.
Grow up people, we all have the same stuff.