My kids. My daughter Virginia (9) was Lady Sif from the Thor movie. I made her a winged helm and a scabbard for the sword we added. My son Sam (6) as a Clone Trooper. He didn't use the helmet because it messed with his glasses. And my daughter Natalie (6) was Zita the Spacegirl (www.zitathespacegirl.com). I made this costume myself. She made one request: to change the Z on the shirt into an N.
So, what did other kids dress up as?