Howie Dorough

Lindsay Lohan has caused a rift between Backstreet Boys Brian Littrell and Howie Dorough -- because only one of them considers her worthy of his prayer. Lord have mercy. Check out TMZ on TV -- click here to see your local listings!

It's barely November ... but the Backstreet Boys are already pretending it's Christmas time. The entire band -- even Kevin -- threw on their obligatory ugly winter outfits for a performance of their new Christmas song at Disneyland this weekend ... sparkly sweater, checkered jacket, scarf, etc.…