When I was really little, I had an epic Glenda the Good Witch costume with a custom-made replica dress designed by a family friend. I also had a pretty sweet Rainbow Brite costume one year. I had awesome costumes when I was younger.
I remember once I dressed a ghost costume I got from Wal-Mart, and I saw this adult in the exact same costume and got embarrassed, so this as defienetly my worst costume
I dressed up as a lot of things (a detective, a cowboy, a witch, Cubone, ect), but my best ones were when I was in elementary school. I think it would have to be a tie between Meg from Hercules and Princess Amidala from the Phantom Menace. I even had all the white face paint on thanks to my mom. :'3 There were a lot of darth mauls that year too which was pretty cute.
Just kidding, I really don't know. I've never been dressed up for Halloween, except when I was a kid, I had this witch costume that I loved. My sister had the same, we were having such good times back then. When it was too small to fit, I simply stopped getting dressed up for Halloween. But it's not like we celebrate Halloween a lot in my family/country.