If you're not already a Belieber, you will be now...
Justin Bieber has publicly backed the Lewisham and Greenwich NHS Choir to be this year's Christmas number one.
Right now, the race is close, but Justin Bieber has urged his fans to "do the right thing" and get the charity single to number one.
The choir's charity single, A Bridge Over You, is currently behind Bieber's Love Yourself, but if his fans follow his strict orders it might be a landslide victory.
The 21-year-old has tweeted: "Let's do the right thing and help them win. It's Christmas."
He even put a link to download the song, so it's obvious that he means it.
Money made from the single is going to health charities, including Carers UK and Mind.
