I'm 5'5 and I usually wear size 0 / pants size 25.
Sezane silk tops first got me hooked on the brand. My first love is their beautiful Chlo top in a dark green color. I loved it so much that I went ahead and purchased the navy blue version of it too. What really impresses me about Sezane silk button down tops is their attention to detail - notably a lot of them have silk covered buttons.
Wearing the size 2/FR 34 for these tops.