Mariah Carey has launched the festive season on November 1 with over-the-top Halloween-to-Christmas video, declaring "It’s time!"With Halloween barely over, the singer launched the countdown to Christmas with the kitsch video just after midnight, which many fans have lapped up, but others slammed as “ridiculous”.The pop icon shared the elaborate clip on social media, which sees her dressed as Morticia Addams, waltzing through a gothic mansion, only to flip a switch and transform the scene from Halloween to Christmas.Carey is joined by a Tango partner who morphs from a Gomez Addams lookalike to a festive snowman, setting the stage for the Christmas season. One fan wrote, “Iconic that this happened at 12:01am on the dot.” Another said: “This is what we need to kill the stress and dramas right now. Bring on Christmas!”