Looking closer at the above RRL shirt, it really does look to be the short sleeve version, not the long sleeve, with a black under shirt on with hand warmers too, perhaps for the costume reveal, or just to stay warm? He could roll the sleeves up for filming so the hand cover isn't visible easily enough....
For those of us with the longer sleeve variation, it's the exact same shirt, just with shorter sleeves, so if you professionally cut the arms down it would be the same thing.....I found one of the RRL ones here and picked it up cheap, so I'll post pics when it arrives too...I don't wear the long sleeve one much since I'm never really that cold...
The buttons though, are still a puzzle...They changed them, either resewn on, or painted darker, probably to stop a clear change on screen so it all blends better in the dark of the bar, but I'd like to see the screen used item...I've searched for this in the faded grey with black buttons and not found it....So...