By now, every fashion fan has dipped her wallet into at least one high/low designer collaboration. Take your pick — Target Go International, H&M, Urban Outfitters, Mango, and so on. The latest one, between Liberty of London and Target, will produce a limited-edition collection of fashion and home goods for March 2010. With the amount of high and low partnerships out there, it begs the question: Is the market saturated? Are you over it? On one hand, it's great that the budget conscious can afford designer, but adversely, it's hard to keep up! What do you think?

popsugar poll

Are Mass-Market Designer Collaborations Passé?

Sadly, yes. Let's take a breather.

Hell no — Keep 'em coming.

It's time to kick off our fun Best of 2009 polls — you ready? Which designer reigned supreme this year? Big decision, after all, they're the ones who inspire us to think creatively, look our best, and try out new trends. We narrowed it down to five based on their accolades (and our obsessions) throughout the year: Isabel Marant, Jason Wu, Marchesa, Balmain, and Stella McCartney.

(L-R: Isabel Marant, Jason Wu, Marchesa, Balmain, and Stella McCartney)

French designer Isabel Marant, swept our hearts with her rocker romantic aesthetic and flirty frocks. Fashion darling, Jason Wu, made a major presence this year with his chic, political-worthy frocks. Marchesa's Georgina Chapman and Keren Craig, continued to stun us with their outstanding red-carpet gowns. Balmain's Christophe Decarnin brought badass back — Balmania!!! — with his endless supply of bedazzled body-con dresses and acid wash jeans. And Stella, who can deny the designer's stellar eye for tailored everyday pieces and animal-friendly stance? Don't forget to join our Best of '09 group to share your '09 favorites — the news, trends, models, designers, celebrities, and musings that rocked your world this year. Vote happy? Vote on our other Best of 2009 polls!

popsugar poll

Best of 2009: Designer of the Year

Isabel Marant is so French femme; I can't get enough!

Jason Wu — his creations are simply amazing.

Marchesa is a powerhouse, they deserve a standing ovation.

There's no denying Balmain's major year.

Stella McCartney! She's epitomizes the cool girl.