A large Maternity bra...
"what I'm not going out pregnant?!"
"relax not pregnant just with large lactating breasts"
"are you sure I won't get pregnant"
"look the clothes change your body that it effects like a bra makes boobs, OK"
"Fine fine" Jon said taking off his shirt" and taking the bra, then putting it on with Karyn's help
And Voila Jon had breasts, but luckily wasn't pregnant.