Love the slit, lace trim detail, and overall fit -- but it ran a little big. Normally am XS/S in nap dresses, M in Ophelia, and S in Sabrina, but was worried this would be too form-fitting, so I sized up to M -- and it is huge. Will be exchanging for S so there's still a little room. Definitely take your regular size! (For reference, I am 5'8, 34C bust, 137 pounds)