I know I know. It's another social network, but this one I like. IQONS is the MySpace Music of Fashion Designers. Everyone from the start-up in mom's garage to established boutiques networks and makes friends here.
Membership is free and already the amount of people on there is overwhelming. In other words, there are a lot of Fashion Designers out there and yet the world remains so style challenged, but I digress. IQONS lets you browse other designers, establish friendship links and post upcoming events. It even has a "hot or not" type feature called 15 Minutes of Fame. There's also an AWESOME resource called Catwalk Rating which has pictures from damn near every major Fashion Week around the world.
So if your a Fashion Designer looking for your peers, now you've found them. Try it out. You might like it.
Another one, in a similar vein, is Fashionising, which has been going about 2 weeks now.
We're working at building a fashion network which will connect upcoming designers with their market, and vice-versa. And as such we're building in a lot of promotional tools, such as the Fashion Diary, meaning upcoming designers can feature right alongside established names.