On Friday, some of Hollywood's brightest stars took to the red carpet to attend the AFI Awards. Then, just a few hours later, many headed over to the 2011 Critics' Choice Awards. And as you can imagine, these celebrities who made double-the-red-carpet appearances changed up both their hair and makeup looks along the way. From updos to simple switch-ups with eyeliner, check out these five stars making the transformation. Consider it your go-to guide on going from day to night with ease.