Lately we've been hearing a lot about Madonna the fashion designer, but it looks like she's ready to put her singing cap (and dancing shoes) back on. Madge has signed on to take part in Al Gore's Live Earth concert, along with a ton of the hottest acts in the music industry. It seems like just yesterday Cameron Diaz was with Gore and Pharrell announcing the big event. It's awesome that so many celebs are pitching in to help spread environmental awareness - maybe we should change Pop's colors from hot pink to lime green.