trans | X-posted everywhere! ( sorry) Need Help on Weird Church Mom Thingy!! (Reply)

Toady me and my Mom went to pizza hut for lunch today and she started to ask thing strangest question! She was telling about this womanless beauty contest that they might have at church sometime soon. What it is, is that wives and moms dress up their husbands and sons as women and see who looks better, its basically a big cross-dressing contest. And she wanted to know if I would do it! I haven't even told her I'm trans and wasn't planning to for a long time. After she got done telling me I tried to not act to happy cause she was talking about doing my hair and makeup and getting me a dress! I tried to put on my men wearing women’s cloth's? unheard of! look on. but I couldn't stop from smiling. What should I do? to everyone else its just going to be big game and all, but I don't know how to respond to this " Yeah Mom, you can dress me, but I'm never taking these cloths off!"? What to do! What to do? I really want to do it, but it seems kind of weird to do it cause everyone will accept me that one time, but when I go cross-dressing full time everyone will look down on me.
Someone please respond!
Thanks in advance!
Jonnie