This will probably sound pretty funny to you, but when I do my Body Flex workout, I wear a one-piece bathing suit and that's it. That way, nothing cuts me up when I'm doing the funky breathing and I'm streamlined for the sitting/standing positions.
However, in the evening I switch to sports bra and leotard for yoga or pilates or yogilates - need something high-cut in the front so the ol' boobs don't slide out. Occasionally, I'll wear capri pants if I'm a little chilly.
But then, I do all my workouts at home - in the public eye, I have no clue what I would wear. I used to do yoga in a studio and then I wore capri pants and short sleeved sports top that theoretically has wicking to keep the sweat off the skin... but considering I was constantly dripping with sweat when I did it, I'm not sure if it worked.
"It's never too late to be what you might have been."