Photos, videos and everything on the first day of the X Factor auditions in Kansas City!

This Friday (8) saw the first stage of the X Factor auditions in Kansas City, Missouri. The public has formed huge queues around The Sprint Center Arena to watch the recordings.

The highlight was the replacement of Simon Cowell by Irishman Louis Walsh, a friend of Simon and current judge of Britain's Got Talent - Louis has also been judge of X Factor UK, at the time that Britney Spears has performed with Womanizer in 2008.

"I'm loving being here, and nobody seems to be feeling the lack of Simon", joked Lous Walsh via Twitter. According to the Daily Mail, Simon got sick (bronchitis) and can not be present. "I can not believe I'm saying this... but I miss Simon Cowell. Hope you get well soon!" Britney wrote on his Twitter profile.

Before you even leave the car, Spears recorded a message and posted the video on your profile Viddy. Watch the player below:

Friendly and smiling, on arriving at the arena the singer took a small stumbling block to get out of balance, but laughed at the situation - what is TMZ going to invent a story about the singer being "drunk" on arrival?

Britney waved to fans and handed out some autographs. The dress worn by pop princess is the fashion designer Azzedine Alaïa, and the shoe is the brand Miu Miu - People magazine said that she got to choose the look and commented that Britney is more attuned to fashion, and who are eager to see what it uses the next recording of X Factor.

On the performance of Spears as a judge, fans reported that the singer was doing some funny jokes, very confident and focused.

Among the songs presented, Natural Woman of the Aretha Franklin, the performance was more thrilled. A participant of 43 years who did the cover (watch) was a standing ovation by the audience and the jury: "I feel like my soul was vibrating while you sing, you made everyone here feel alive. Find people like you are the reason I'm here", said Britney. (You Drive Me) Crazy was sung by another participant, but does not seem to have pleased Spears. "You're lovely, but was out of tune", Britney said to a candidate. "His voice is strong! You need to open up more, like 'Aaaaah'", recommended.

In the second section the singer seems to have disapproved of several candidates and let out a few phrases like "I can not take you seriously as a rapper", said a young man who sang hiphop. "It was a bit ... boring", and asked for Demi Lovato leaving the fence as the assessment of the participant. "I found his performance a bit boring, a bit predictable... You definitely do not have the 'X Factor'!" He said to another person.

One participant sang Ain't No Other Man, Christina Aguilera music (watch), and Spears said: "You have the whole package - look, charisma and voice. You're incredible."

Britney has also prepared a surprise for one of the judges table. Early in the second set of recordings, the singer went to a birthday cake and sang happy birthday to L.A. Reid - he completes 56 years today.