Justin Bieber spread a little holiday cheer on the UK version of the “X Factor” this week by performing a live rendition of “Mistletoe” from his “Under the Mistletoe” Christmas album.

Right in the middle of his performance, the 17-year-old singer, living up to his teen heartthrob title, walked up to the panel and sang some of the flirty lyrics to female judges Kelly Rowland and Tulisa Contostavlos, who both couldn’t hide the bright smiles plastered on their face.

Watch below: