Cananny-Those boys are looking great! Thanks for the pictures.
Sphinxy-I'm so glad your ultrasound went well and you are feeling relieved. Things will get even more real as you go along. I started wearing maternity pants around 16 weeks I think. I had bloating from the beginning, but I think my pants were a little bigger and stretchier to begin with. I was able to use either a rubber band or safety pin for a week or so to make things more comfortable. The belly band didn't work for me because it would roll up on my hips, but if you are less curvy, it might work better. I have some pants my sister gave me that I can't wear if you're interested. They have the big elastic that goes under the belly, not a full panel. She is about 5'3" and around a size 12/large.
I'm not really familiar with maternity bras. I didn't grow a lot in that area right away so my bras didn't get really tight until the second trimester. I went out and bought new bras a few sizes larger. I figure I can wear them for a while now and maybe after the baby is born. I wasn't planning on getting nursing bras until I get closer because I figure my bb's will get even bigger and it will be easier to get the right size later. I got a new sports bra without an underwire because underwire can cause problems with nursing breasts. That way I can wear it now and later. It has a little extra room in it just in case.