Tegan and Sara (10/9/2008)

It must be nice to be in a band with your twin sister. Shared skinny jeans, skinny genes, and hipster hair products make costuming a breeze, and a sound-alike bandmate eliminates the technical hassle of overdubbing vocals. Plus, you know the other person so well that you can make fun of them on stage, as Canadian duo Tegan and Sara demonstrated at Chicago’s Riveria Theatre. “I forgot what a shithole this place is,” my 'plus one', better known as Grace Yip from Grace the Spot, lovingly remarked upon our arrival.