I only have one maternity skirt that fits, so I usually wear DH's PJ pants while I'm at home. Yesterday I actually split a pair of his pants up the crotch. Apparently the grand plie in second position I have to do in order to bend over and make room for the big belly (thank goodness for those years of ballet training) is a little too much for DH's pants.
Sigh. I guess I'll just wear nothing but a bath robe for the rest of the pregnancy.