Did you catch ‘X Factor‘ on TV? If not, maybe it’s because you missed the viewing party! Britney Spears was all smiles with Simon Cowell on the red carpet for the ‘X Factor’ viewing party held at Mixology. Demi Lovato also got her turn to mug with her fellow judge. LA Reid chose to work the red carpet alone.

Co-hosts Khloe Kardashian and Mario Lopez were also there. Mario married Courtney Mazza over the weekend. The bride attended the viewing party with her groom. Congrats to the newlyweds!

Photos by KM/FAMEFLYNET