It's hard to overstate our love for L.A. power-pop trio Haim. 'Something to Tell You,' their sophomore album, is one of our favorite LPs of the year. Live, sisters Danielle and Alana play with reckless, youthful energy. But it's bassist Este--specifically her colorful, emotional faces--that has gained a cult following. (There's even a twitter page devoted to it @estebassface.) To celebrate the group, we've compiled some of our favorite poses into one gallery. Rock on, guys!