Well, we guess this means those pictures were real!
We're talking full frontal. Full. Frontal.
[Image via Justin Bieber/Instagram.]
How do you bring down the house at the X Factor finale with just five guys?
Make them all go One Direction!
Ch-ch-check out the video (above) to see 1D rock out with their Midnight Memories out!
And be sure to look for Demi Lovato singing along! She's totally a Directioner!