Is that you Zach Galfianakis?!

The star of the Hangover movies has debuted his extraordinary weight loss recently.

Zach appeared on the The Tonight Show with Jimmy Fallon and looked great as he discussed his new movie, Birdman and how he feels about red carpet events.

The actor spoke about a particularly awkward moment on the red carpet when E! News correspondent Alicia Quarles asked him about his weight loss to which he replied: “No, I’m just … I’m dying.”

Hmm, that sounds like a hard one to react to…!