Talk about lighting up a room; talented actress Claire Danes has given new meaning to the saying, heading to the Met Gala in an incredible glow-in-the-dark Zac Posen gown. Claire Danes dazzles in glow-in-the-dark Zac Posen dress. Image: Instagram, @zacposen The usually fashion-safe Danes donned the wondrous creation, which had an almost Jekyll and Hyde personality. On the red…