I second TJ Maxx or Marshall's. If you have any other discount stores, such as Ross: Dress for Less or Gabes, I'd check those out as well. Always check out clearance racks at department stores. Sometimes you can find some great deals.
If you don't mind thrift shopping, check out Goodwill (or local stores). Its hit or miss, but you can find brand new/like new clothes. I do most of my shopping at Goodwill. Just don't buy anything black unless it has tags on it still. It will probably be faded.
Current Goal: Wear Size 10 Pants by September 1st