Countrywide is more widely known as a lender that can get applicants approved despite bad credit histories and other detrimental credit scenarios than as a mortgage lender with rock-bottom interest rates.
However, the items they put in their Final Clearance section can be marked down by as much as 70%, so that you can get a long, black velvet gown with a plunging neckline for close to a rock-bottom price.
If you're lucky enough to find holiday lingerie in your size after the season, you'll most likely be able to get rock-bottom prices on fabulous pieces, especially at retail stores like Wal-mart.
If you're looking for rock-bottom prices, you may have to rely mostly on sales, eBay and luck, but you can find decent stuff at reasonable prices that will show you off at your best.
If you are looking for something specific, neighborhood online forums such as Yelp or Craigslist should help you find a perfect party dress at a rock-bottom price.