Well you could just maybe get some of them altered to fit you still. I'm not sure how much it costs. But you could get estimates. You can also just go to Walmart. They are having sales on all their summer stuff, because you are losing weight you will be able to buy smaller sizes on sale!
Plus they sell lots of basics. It depends on how much weight you have to lose. If its 10-15 pounds, you can probably just get them taken in a bit and then still wear them.
Other stores will still have some sales too! So you can just look all over. But I suggested Walmart mainly cus you can get basics cheap there. That way you can save some cash for nicer clothing.