Sorry if this has already been posted, but I just saw this:
http://jezebel.com/a-field-guide-to-the-impossible-to-dress-pregnant-body-474991644?utm_hp_ref=parents&ir=Parents

Rings pretty true to me (well into month 6 now). This stage lasted a while for me: "At this point she is showing alright, but there are no neat little half-domes involved. Instead, she just starts to thicken up all over, but the action is most concentrated in her stomach which has becomes this jiggly wiggly pile of mush."