Paris Hilton has made a Halloween tradition out of paying tribute to Britney Spears, and this year she went all in on the details: recreating Spears's iconic 2001 VMAs performance of "I'm a Slave 4 U" complete with an albino Burmese python draped around her neck, according to Billboard's roundup of this year's celebrity costumes. It's the fourth consecutive year Hilton has dressed as her fellow Y2K-era pop icon for Halloween. She also debuted a second look this season inspired by "Beauty and the Beast" that got her whole family involved.