Wearing this dress in XS for reference — I’m 5’3” and 110 lbs. It fits so nicely and hugs the body in a really flattering way without feeling too tight. The length is also perfect on me, giving that soft, elegant look. I really love the floral print — it feels super feminine, romantic, and pretty in person. The whole dress gives such a graceful spring/summer vibe, especially paired with heels. If you have a similar body type, XS should fit well.