You Won’t Believe The HUGE Mistake in This ‘Downton Abbey’ Press Photo

A promotional photo for Downton Abbey is turning a lot of heads--in a totally bad way. Take a look at the pic above and see if you can spot the GLARING error made by the set decorator. See it? I'll point it out below.

Yes; that's a plastic bottle. Looks like a Diet Coke bottle to me, and y'all all know they didn't have Diet Coke in the Downton days. Come on, set decorator, you had ONE JOB. How are you going to leave a Diet Coke bottle on the mantle next to Edith and Lord Grantham?

A new season of Downton Abbey will be premieres on BBC September 21, 2014 and January 5, 2015 in the US on PBS.