The X Factor red carpet became a battle zone today as veteran judge Tulisa Contostavlos was joined by guest judge and the name on everybody’s lips right now, Rita Ora.

The pair used poses, pouts and push up bras to upstage each other on the red carpet, but who looked hotter?

Take that Tulisa!

Rita Ora replaced Geri Halliwell to become the show’s guest judge, but Rita, unlike Geri who showed off her spice by straddling a moving car, admitted that she was a bit nervous, tweeting; 

The R.I.P singer went for a very sophisticated look, teaming a clean white dress with structural layering and a smart collaring detail with a sharp white blazer. The addition of the tartan and gold chain heeled trainers and gold flower encrusted glasses ensure this outfit isn’t too sensible and structured showing off Rita’s love of streetwear.

I'll kill Simon for this...

Tulisa however stayed far away from the quirky territory and played up to her sweet pop singer image in a Felder Felder Spring/Summer 2012 printed dress with cut out detailing at the back and Kandee Blackberry Crush ankle boots which give the look a fierce edge, echoed by her dark locks and gold hoops.

We think both these ladies brought their A Game this week, but style savvy Rita Ora has the edge on sweet and safe Tulisa.

Pappzd Verdict: Rita Looked Hotter