Put it away, Simon! Cowell looks scruffy (and slightly height-challenged) in unbuttoned shirt and jeans as he unveils new X Factor USA panel

They’re no strangers to big publicity events, and earlier today (May 14) Britney Spears and Demi Lovato were in the house for the 2012 FOX Upfronts in New York City.

The “Baby One More Time” songstress and the “Skyscraper” starlet showd up at the Beacon Theatre to be announced as the two new judges on the forthcoming season of “The X Factor."

Britney and Demi will fill the vacancies left by Nicole Scherzinger and Paula Abdul’s departures, and will likely bring a youthful vibe to the already successful talent show. “I couldn’t be more excited to join The X Factor judging panel. I’m a huge fan of the show and now I get to be a part of the action. Simon and L.A. better watch out!” the 30-year-old pop star recently released in a statement.

FOX honchos Kevin Reilly and Peter Rice told press the changes at “The X Factor” are in an effort to make the gig more “entertaining and exciting.”