Wilfred Cyprie Sweater in Light Birch

Pullover turtleneck sweater in cream by Wilfred from Aritzia. 100% merino wool. This is gently used in good condition. No flaws. This does run small. The label say medium but it fits like an extra small. I have the same sweater in a different shade that is an extra and these have the same measurements. Please compare flat lay measurements for best fit. Length: 20 1/2” Across bust:18 1/2”