Getting your teeth sharpened for Kelly's return? Tulisa pays a visit to the dentist ahead of X Factor showdown with rival judge

By Nadia Mendoza

Last updated at 9:05 PM on 3rd November 2011

With gleaming teeth like that, let's hope Tulisa Contostavlos doesn't take a chunk out of rival judge Kelly Rowland if things turn nasty this weekend.

The young X Factor judge paid a visit to the dentist today and left with a radiant set of pearly whites that put Simon Cowell's veneers to shame.

The N-Dubz singer was spied leaving the dental practice this morning, and looked eager to flash her dazzling grin tonight outside the Mayfair Hotel.

Glistening: X Factor judge Tulisa Contostavlos showed off her pearly whites as she left the Mayfair Hotel

Dressed in a patterned frock that pulled in at the waist, Tulisa teamed the outfit with a flesh coloured leather jacket.

The mish-mash of styles was suitable for daytime attire, although the black heels and lashing of red lipstick polished off the get-up for the evening.

Dental duties: Tulisa 's smile looks polished

But the beaming smile gave little away of the dramas unfolding behind the scenes at X Factor HQ.

Reports surfaced last week that the 23-year-old is at war with fellow panellist Kelly Rowland, forcing the Destiny's Child singer to pull a sickie last Saturday and Sunday.

Rowland abandoned her girls for a trip to LA, saying she was too ill to return and voting off contestant Sophie Habibis over the phone.

But now the feisty judge, 30, has returned, Tulisa has miraculously fallen ill instead.

According to The Mirror, X Factor bosses are still unsure whether Tulisa will be able to get better in time to attend this weekend's live shows, but are hoping for the best.

Should Tulisa turn up for duties, it will mark the first time she has appeared on screen with Kelly since their rumoured falling out over Misha B, in which Tulisa accused the young hopeful of having a bad attitude backstage.