Gossip Girls, Ghouls & More: Reader Costumes!

From celeb-inspired looks to spooky getups, see the costumes PEOPLE.com readers shared with us on Twitter!

SERENA & BLAIR

"Last year, I was S and my best friend was B. xoxo!" writes ohsowhitty about her Gossip Girl-inspired costume of the Upper East Side's reigning queens of mean, Blair and Serena.