My first pg i didn't really get a chance to wear swimwear as i was at work so much but this time i am now wearing a tankini top and pants. The top covers my belly and is the Bonds brand and i just had a spare pair of bottoms at home that go well with it. Last time i did an aqua class i still fitted into my one piece speedo type swimmers but that was prob about October (5-6 months pg)but they were stretching to fit. I guess it depends on where you buy them. And because i didn't obviously show i was pg till about 5 months i thought it was silly to spend alot of $ on Mat. swimwear.