I'm far more impressed when a brand uses an athlete to promote their sporting equipment or fitness attire than when they use a regular celebrity. I like to believe that, if an athlete is promoting it, he or she probably wears it, so it can't be all bad. It's a flawed belief, I know, but it works for me.

Adidas is hoping that women across the nation share my belief -- they've tapped Rainbeau Mars, yogini extraordinaire, to promote their yoga line. Next spring, Adidas Performance Stores across the nation will carry the new Rainbeau Mars Signature yoga activewear collection, which will be made from sustainable fabrics.

According to Adidas, Rainbeau had plenty of input in the creation of the collection, offering insight into what female yoga practitoners really need. In addition to that, the well-known yogini has done a series of ads for the brand (which you can see in the gallery) and shot an instructional video featuring famous athletes like Laila Ali and Steffi Graf, all with the theme "Play Yoga."

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