Rita Ora could be in line for a full-time job on The X Factor after wowing at the London auditions. After just one day, the R.I.P singer impressed the crowd and bonded with her fellow judges. Tulisa Contostavlos tweeted that she was \"glad to have @RitaOra joining us today\" and told the Daily Star: \"Rita is great for the panel. Despite only breaking the commercial scene recently, Rita has been in the industry for years and knows what she is talking about.\" Rita, who wore a white mini-dress and bling-tastic jewellery for the big day, tweeted her excitement about being a guest judge. She wrote: \"I\'m here... I can\'t breathe! X Factor, I\'m just like you, remember that. I\'ve just started too, I\'m here to help!\" Geri Halliwell, who was guest judge in Liverpool last week, was reportedly not as popular. A source told the Sun: \"Geri had a lot of energy and tried her hardest to make an impression. But you need chemistry with the other judges in spades if you are going to join the panel full time.\" X Factor winner Leona Lewis returns to the show today, this time as the next guest judge. It has not yet been decided who will replace Kelly Rowland on the panel alongside Tulisa, Gary Barlow and Louis Walsh.