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22 February 2013, 14:18
The 'Cry Me A River' singer's set saw his wife grooving along in the crowd as he played 'SexyBack'.
Jessica Biel can be seen getting her groove on as she watched her husband Justin Timbelake perform at The Forum in London this week.
A video of the Hollywood actress from the Kentish town venue has emerged online following his intimate post BRIT Awards set.
The Total Recall star claps and sings-a-long in the footage as the former N*Sync star brought his set to a close.
He had earlier taken to the stage at London's O2 Arena for a world exclusive performance of new song 'Mirrors' at the BRITs.
Other performers on the night included the likes of Robbie Williams, One Direction and Emeli Sande.
Watch Justin Timberlake's wife Jessica Biel rocking out to 'SexyBack' below:
The US star's London Forum set was watched by a host of celebrity guests including Justin Bieber, JLS and Gemma Arterton.
Meanwhile, his new track 'Mirrors' has now shot straight to the top of the iTunes singles chart after his BRIT Awards performance.