Credit: David Livingston/Getty Images Photo: Stana Katic at an ABC Television Critics Association Party in August 2010
TV Guide asked a bunch of hot TV stars to reveal their favorite Halloween costumes of all time. No hot list is complete without Castle stars Nathan Fillion (Richard Castle) and Stana Katic (Det. Kate Beckett), so here's what they said:

Nathan Fillion: "For a number of years I kept expanding a costume I made of a nine foot tall Grim Reaper with mechanical hands and eyes that lit up with a button. I was just about to add a big set of bat wings that would open up when I realized I was getting a little older and if I ever fell down while on these stilts I would probably never get up."

Stana Katic
: "I was Pippy Longstocking, who I loved from childhood."

Leave it to Nathan to have something adorably complicated and Stana to keep it no-nonsense. Check out what some other TV stars said here.

Source: TV Guide