Giving the cameras big smiles, the "Gimme More" and "Skyscraper" singers posed for pictures before auditions kicked off - with Britney looking stunning in a plunging hot pink mini dress and black pumps while Demi opted for a neon green number.
Keeping her fans up-to-date, Miss Spears tweeted moments prior to her Austin episode taping, "Just arrived for @TheXFactorUSA auditions - hope everyone is ready! Still waiting on @SimonCowell of course...."
The pop princess has been getting a lot of advice from former judges of the "X-Factor", as Paula Abdul told Perez Hilton, "I think it's going to be great, and I'll tell you why. I think people are anticipating seeing Britney Spears. She's overcome a tremendous amount of adversity. And I'm always for the underdog coming back.She's a big star".
Meanwhile, former judge Nicole Scherzinger added in an interview with E! Online, "Britney is so bubbly and warm and everyone loves her anyway, so she just has to be herself.I think that it's something that we can't deny, but there's something about Britney that we ... are always rooting for her and behind her, no matter what".