This is a blue-green shirt that was worn by Rosalee in the show. The label inside says "Rosalee 1/2" (that is the way production identified their items - 1 out of 2). It also has a wardrobe tag with the letter "S" on it (probably for Small or maybe Stunt). I did not screen match it yet, but I still have a lot of episodes to go through (so I still have hope to find it).