Turn around you girls, turn around!  That's Sam Smith walking up behind you.

They don't even recognize him!!

Sam was getting ready for his sold out show at the Red Rocks Amphitheater this week near Denver, and two fans (but apparently not big fans if they don't recognize him) are being interviewed by a TV station.

Sam's bunny ears an peace signs distract them a little, but they don't scream and flip into hysterics because it's Sam Smith.  To them, it's just a weird dude with sunglasses on.  Sam Instagrammed it later on.

Sam just lost a bunch of weight, and it turns out the skinny bod is the perfect disguise.  They missed a selfie opportunity!