She was the only X Factor judge that bothered to get into the Halloween spirit - but if she cared she didn't show it.
Kelly Rowland's stand-in, Alexandra Burke, shimmered in a sparkly minidress.
See all the latest X Factor fashion below:
Suggested For You
SUBSCRIBE AND FOLLOW
Get top stories and blog posts emailed to me each day. Newsletters may offer personalized content or advertisements.Learn more