Online fashion retailer ASOS is one of the most social savvy of brands. It has over 230,000 followers combined signed up to its Facebook, Bebo and MySpace pages, and nearly 30,000 more tuning in regularly to the ASOS Twitter feed.

The AIM-listed retailer has little choice:the site is aimed “primarily at fashion forward 16-34 year olds,” in other words, the social networking demographic sweet spot. Having anything less than a full-on presence here would be bad for business.

The retailer this week has pushed the social media envelope yet again, this time building a site consisting of nothing but the streaming Twitter feeds of those it regards as the most influential fashion Tweeters. The ASOS Follows Fashion Twitter aggregator streams fashion tips, photos, links – everything for the “fashion-forward” trendster – from the likes of designers, photographers, journalists and brands. Here’s a peek:

As James Hart, ecommerce director at ASOS, told NMA:

“We’ve been chatting to our customers through social media for a few years but we also follow and interact with some of fashion’s greatest through Twitter. With asosfollowsfashion.com we get to share this passion.”

A fascinating example of how a brand is reinforcing its authority in the online community though the simplest of gestures: sharing what it considers worth following with its followers.