George Mackay, Dean-Charles Chapman, & Andrew Scott Buddy Up for '1917' Premiere!

The guys of 1917 are hard at work promoting their new movie!

George Mackay, Dean-Charles Chapman, and Andrew Scott were all smiles on the red carpet as they attended the premiere of their new movie on Wednesday evening (December 18) at the TCL Chinese Theatre in Hollywood, Calif.

PHOTOS: Check out the latest pics of George Mackay

Also in attendance was fellow cast member Claire Duburcq and director Sam Mendes.

Earlier that day, a new trailer for the upcoming war movie was released.

1917 will be out in theaters on Christmas Day, December 25.

READ MORE: Critics Are Praising ’1917′ in First Reviews!

25+ pictures inside of the stars at the premiere…