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'X Factor' Judges Britney Spears & Demi Lovato Celebrate Premiere, Leave Their Mark On Cement

9/12/2012 1:00pm EDT

Britney Spears

Britney Spears, Demi Lovato, L.A. Reid and Simon Cowell made their mark in Hollywood on Tuesday. "The X Factor" judges left their handprints in cement outside Grauman's Chinese Theatre.

The team celebrated season two of the singing competition, which debuts on FOX tonight at 8 p.m. eastern.

Lovato posted a photo of the group on twitter, writing, "Surreal..." Spears tweeted,  "I'm here!!! Just walked the blue carpet for The X Factor Party - so exciting!"

Meanwhile, a host for the program hasn't been finalized, though rumors persist that reality star Khloe Kardashian will fill the slot.

Check out more photos from the handprint ceremony...

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Photo Credits: WENN.com