When was the last time you wore a pair of jeans to yoga class? I'm guessing never. Montreal's Second Denim (secondclothing.com) would like to change that. The company's Yoga Jeans ($120), designed to stretch as you move into Downward-Facing Dog and more, are 97 percent cotton and three percent Elasthane. When Second Denim owner and designer Eric Wazana was asked if he actually expected people to wear them to yoga, he responded, "Absolutely." Anyone game?