When did The X Factor Season 8 Episode 31 air?
The X Factor Season 8 Episode 31 aired on December 11, 2011.

Dermot O'Leary reveals the results of the public vote. The two acts left battling for the crown perform what will become the winner's single in front of 10,000 people at Wembley Arena, before they find out who has won this year's competition. Plus there are performances from top international guest stars. With judges Gary Barlow, Kelly Rowland, Tulisa Contostavlos and Louis Walsh.
Direct answers for episode-level questions and details.
The X Factor Season 8 Episode 31 aired on December 11, 2011.
This episode runs for approximately 60 minutes.
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