I used my Pepsi Points for this shirt for my 7 year old daughter.
We ordered a womens medium after reading the reviews and it was a little baggy like we had hoped but if you were ordering it for a medium women it would not fit .  IT IS LIKE ALL PEPSI CLOTHING IVE SEEN IT RUND VERY SMALL.
they must use kids when they determine their size chart.  I wonder just how small a small or extra small would be?