I'm 23 weeks, due Aug 16. My first, and it's a boy. (I had amnio done so the sex is 100%)
On a not so happy note, the bra I bought LAST SATURDAY no longer fits. So I had to buy a bigger one today.
My advice is buy clothes as you need, don't buy a bunch in advance, which thankfully I didn't. Who knows how long stuff will fit, how big you'll get, and how you'll carry.