PICTURES! Rita Ora joins The X Factor 2012 panel for London auditions

Rita Ora (X Factor 2012)

Rita Ora became the latest X Factor 2012 guest judge this afternoon, as auditions continued in London.

The young singer joined Tulisa, Gary Barlow and Louis Walsh to walk the red carpet outside London's O2 Arena.

Writing on Twitter, Rita wrote today: "IM HERE…… I CANT BREATHE! X-FACTOR….. IM JUST LIKE YOU REMEMBER THAT. IVE JUST STARTED TOO IM HERE TO HELP"

Rita, 21, follows Leona Lewis and Geri Halliwell in becoming a 'contender' to become the new fourth judge, follow Kelly Rowland's exit earlier this year.

Sources have claimed that X Factor boss Simon Cowell is keen to get Rita to join the panel full-time, and that today's auditions will act as a trial for her.

Let's hope they go a bit better than the Liverpool ones with Geri last week!

Browse the pictures below!

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