i am personally opposed to onesies for little ones over a year. once they can walk i don't want additional snaps and such to deal with... especially when working on pottying like a big boy.
however, boy had some onesies in his current size that had been given to us. i didn't want them to go to waist... especially since we are participating in the 2 month wardrobe refashion and can't buy new clothes. so here is what i did.
cut the bottom of the onesie off. didn't hem or anything... the jersey fabric won't fray. easy peasy done!