Guest judge Rita Ora steals limelight from Tulisa at X Factor auditions

We were super excited to hear that uber cool popstar Rita Ora is guest judging at today's X Factor auditions.

Tulisa X Factor Rita OraRita Ora stole the show from Tulisa at today's X Factor auditions. Copyright [Wenn]

And the Rihanna-lookalike made sure she stole the show from permanent judge Tulisa as she arrived at London's O2 Arena today to take her place on the X Factor panel.

Rita Ora wowed the waiting crowds in a a white collared dress and sharp white blazer to match.

But it was her accessories that REALLY stood out, with the 'RIP' singer donning a pair of kooky tartan shoe-boots and an amazing pair of gold rimmed sunglasses.

Rita Ora X FactorRita Ora looked gorge in white. With super cool sunnies. Copyright [Wenn]

Teaming the flower encrusted sunglasses with the rest of her gold bling, Rita pouted and posed, wearing lashings of red lippy.

Meanwhile Tulisa looked her usual gorgeous self in a turquoise skater dress and black and gold studded high-heeled boots.

The 'Young' singer is currently the only girl on the panel, with Destiny's Child singer Kelly Rowland counting herself out of this year's show.

Tulisa X FactorTulisa wore a turquoise skater dress. Copyright [Wenn]

Louis Walsh and Take That star Gary Barlow are taking their seats once again - and the pair turned up today looking dapper as usual.

Gary Barlow X FactorGary Barlow looked cute in trousers and a blazer. Copyright [Wenn]

Rita is Ora is just the latest celebrity guest X Factor panelist, after Spice Girl Geri Halliwell took a spot last week.

X Factor winner Leona Lewis is believed to be also set to take a place, with Mel B and Mel C ALSO linked with the hot seat.

[Related story: Geri Halliwell booed as guest judge, doesn't care]

[Related story: Jessie J denies Tinie Tempah dating rumours]

[Related story: One Direction want to be fourth judge]

Rumours suggest Tinie Tempah is also going to be guest judging, with the hottest spot on telly still up for grabs.

Zayn Malik from One Direction told us exclusively that he reckons all five 1D boys in one seat would make a cracking show.