I didn't know if you wanted to hear from anyone else...
I've had to go the baggy t-shirt route myself -- Sam's Club has some colorful ones (that wash well) for less than $5.00. I have also had some from Adidas (expensive, they shrunk, very thin material, and too short on me after one washing -- I'm 5'10") and I've worn the regular, colored t-shirts that they sell at Motherhood Maternity... these, too, shrink, but they are cheaper, and I just buy them in a larger size. My boss is 34 wks. pg (I'm 30 wks) -- she is more confident about her pregnant body and wears tighter tops and looks great in them. I think some of her tops were slightly oversized when she wasn't pregnant, and she still wears them. I don't think that she has the same humongous bust problem that I do, though -- with both of my pregnancies I've gone from a 36C to a 38DD or E cup. That's incentive enough for me to stay in baggy shirts LOL
I have found great bottoms this time, though -- I have some Adidas capri length bottoms, some biker type shorts from Motherhood Maternity, and a cute warmup suit (very similar to the more expensive ones you find elsewhere) with bootcut pants again from Motherhood Maternity (and, again, buy a size larger if you want to be able to toss it into the dryer).
Here are some good sites for maternity fitness wear...
http://www.fitmaternity.com/
http://www.mothers-in-motion.com/online_catalog/catalog.htm
http://www.annacris.com/default2.asp
Susan