J.M.
This is so funny! We're going through the exact same thing. My 2 year old daughter stopped wearing pants in the house this week. We're also due for #2 in April. Anyway, I've just taken the attitude that there's so little the kid can control in life, if she doesn't want to wear pants she doesn't have to. With these types of things, I generally take the attitude that if I don't make a big deal of it, she won't either and it seems to be working (for now!). At this age, I pick my battles very carefully. Good luck!