Twitter has already established itself as an effective tool for keeping in touch and gaining new fans and followers, used widely by marketing gurus, internet CEOs and recently even by celebrities – check out Britney Spears profile (managed by her PR team, of course).

The micro blogging environment allows sending the right dose (140 characters) of daily updates and engaging in short conversations. Twittering can be done via cell phone from any location, and does not require more than few moments a day, making it the perfect self-branding extension and exposure tool for anyone like a TV host, actor, musician, model or fashion designer.

Searching for fashion designers in Twellow (Twitter directory) returns a short list of 109 people out of 659,044 listed. None of these are familiar names or brands people consume and wear on a daily basis. Of course the exception to this is Tony Hsieh, Zappos CEO, who makes sure to update his tweeps (Twitter followers) even at times of major corporate lay-offs. Tony has an astounding number of followers at 21,400! I’m sure many of them didn’t know his name before he jumped on the micro-blogging-social-media-engagement wagon.

Now imagine the vast possibilities when the likes of Michael Kors, Tory Burch and (my personal darling) Marc Jacobs discover the power of Twitter. I’m sure many of Marc Jacobs’ fans will turn to Twitter every day to get a sneak peek into his fabulous and oh-so-exclusive world of constant inspiration, creation and jet setting:

MJ: meeting Victoria Beckham to discuss new campaign possibility…

MJ: flying to Paris for the Louis Vuitton designers’ team meeting, feeling inspired…

MJ: expect lots of red on my Fall runway…

Anticipation will rise, addiction will take place, bloggers will rejoice and sales for fall red dresses will sky-rocket.

So why isn’t Marc Jacobs Twittering? …