X Factor 2012 judges celebrate Nicole Scherzinger's birthday backstage!

Nicole Scherzinger (X Factor 2012)

The X Factor UK judges celebrated Nicole Scherzinger's birthday backstage at the Cardiff auditions on Monday.

It's Nicole's birthday on Friday, but Louis Walsh was on hand with a very special cake for the new judge a few days early!

Nicole tweeted: "Louie surprised me today w/an early b-day cake at UK XF! Lots of luv Louie! Xo"

Monday's try outs in Wales were the final of this year's audition tour, although only the third auditions for Nicole, who joined as a permanent judge only towards the end of the tour.

And the show ended with a surreal moment, with a COW on stage.

Nicole wrote online: "Just finished my UK XF audition day in Cardiff and it was crazy and fun! All I have to say is..#massiveudders!"

Browse some backstage snaps below...

Subscribe on YouTube