I'm 4 mths pg and have just invested in some maternity trousers (as I just can't fit into my normal trousers these days, not to mention dh complaining about me squashing "his" baby). Can someone enlighten me re when/what underwear I should get and when (+ where's the best place to get it) - bit lost re the whole maternity wear business as I feel like a bit of a fraud at the moment as I've only got a little bump at the moment.