You might think that Halloween costumes were no big deal for the stars, who get to dress up every day for their work. But you would be wrong. Here's a look at how some stars celebrated the holiday. Blake Lively from, "Gossip Girl," left, is dressed as Cleopatra and host Martha Stewart, dressed as Medusa, bake a cake on "The Martha Stewart Show," Oct. 31, 2008, in New York.
Author: CBS News Staff
Credit: AP Photo/The Martha Stewart Show