If you are looking for clothing by a particular designer, you might try searching their line first, and then ask where a dress can be purchased. A few designers known for quality plus size evening wear are:
- Ellen Tracy: Although this line is predominately work and casual wear, you can get good skirts and blouses at reasonable prices to pair with something dressier.
- Liz Claiborne Woman: Liz Claiborne has always been on the cutting edge of fashion for real women and again, the prices are reasonable and the clothes wear well for a long time.
- Dana Buchman: This designer's high-end and sophisticated yet practical clothes can go from day to evening and are always classy.
- Ralph Lauren Plus: Lovers of Lauren will be pleased to know he’s brought his signature elegance to the plus size woman.
- Carmen Marc Valvo: This designer’s famous evening wear looks well on all bodies.
- Richard Metzger: Full-figured celebrities such as Queen Latifah, Oprah Winfrey and Star Jones love this designer, who creates clothes exclusively for women of size. His ready-made evening wear starts at comparatively low prices, but you can arrange for a special order if you like.
- Marina Rinaldi: Ultra-feminine and refined evening wear to suit your inner princess.
Taken from http://antiquedress.blogspot.com/