I typically wear a size small, but I can also fit the XS for this one. I loved this so much, I bought two different colours. I got this one and the brown one. it's a staple in my closet. Comfortable to wear for day to day things or even for the gym.
This is a very cute purse. You can dress it up or down. If you want to buy one, I recommend looking on SSENSE.com, as they typically have on/off sales on designer purses. I have provided the link above.