You Won't Believe Which Mad Men Star Turned Down Empire

Fox's hit show could have looked a lot different

File this one under: Big mistake...Huge!

OK, so we actually think this Mad Men star will be just fine, but still, John Slattery has to be kicking himself a wee bit for turning down a chance to star on the biggest breakout show of the year: Fox's Empire.

It turns out that executive producer Danny Strong tried to get Slattery on the Fox show...and he turned that chance down.