Mary wears this lovely grey blue sweater when she arrives home after remaining in London with Aunt Rosamund. It's got a cream button placket and grey blue buttons. She pairs it with a cream skirt and a simple white blouse and pearls. I always find it interesting when the Downton costumers put together a look with unusual (to a modern viewer at any rate) color combos. Generally, white and cream together is a no go. Not sure what color blouse I think would look better but I adore the grey blue color of the sweater!
Here's a back shot of the sweater. It's a nice slouchy sweater that reminds me so much of 1920s sweaters. Perhaps Mary has brought back some of the latest fashions from London!
This one has such a similar color palette!
Don't they look so warm and comfy!
Looking to make your own 1920s sweater? This 1918 pattern on Ravelry would be a nice pick or start with any slouchy ribbed cardigan pattern. Knit the button placket and collar in cream to get the two tone look. Not a knitter? Modify a thrifted sweater by sewing on a fabric button placket and collar in contrasting color.