Detachable Flounce Sleeves in Sarah Swirl Vines - The Sanderson Sisters Collection
These Sleeves are a brilliant and easy way to add a full look to your costume but with the versatility of being able to pull them off depending on the weather. They attach together in the center back through a grommet set that you tie together. This allows you to loosen and tighten depending on your shoulder width! I also DO take REAL sizes of arms into consideration! These are a little bit more generously sized than you might imagine, so please please just measure around the largest part of your upper bicep to see what size you need!
Sleeve Size Chart: Measurement Upper Arm