Last night's Cher Lloyd, and current X Factor USA judge, Nicole Scherzinger. (They like to support their own, do the X Factor gang.)
Best dressed guest? Nicole Scherzinger and Cher Lloyd on the X Factor last night. Photos:Rex Features
While both got into the spooky spirit of the weekend, it seems both acts succumbed to the dreaded 'sexy Halloween' curse, with Nicole doing her best goth-glam damsel in distress act (complete with lace corsetry, heaving bosom, bare feet and wind machine) while Cher Lloyd decided to dress up as some sort of flesh-flashing Harlequin-print present (complete with bow-festooned crop top and knicker-flashing tutu.)
But which of the two do YOU deem X Factor's best dressed guest? Vote below...
See more stars getting into the spooky spirit this weekend here:
Steal Nicole's gothic bride style: