Britney Spears in NYC for 'X Factor' Announcement

Britney Spears in NYC for 'X Factor' Announcement: Britney Spears is getting all gussied up for the big announcement today -- that she and Demi Lovato will join "X Factor" as the new judges.Negotiations went right down to the wire between Britney and "X Factor" honchos. Her fiance, Jason Trawick,…