Going commando?!

we didn't try any potty training today, because we were busy today and she hasn't been doing too good but a friend gave me an idea. Tomorrow we are going to try no diaper and no underwear just a dress for Emily (when we are outside) The idea is that if she doesn't have a diaper or underwear to "catch" her pee, she will be more likely to sit on the potty. When I told her my plan she asked, "where will my butt go?"