Lace vintage inspired top

Hurry I might decide to keep this after I styled it with that belt! (Belt not included!). A gift from a designer in brazil. Says Size P meaning S in portugués. But I think it could be an M. The lace is a bit stretchy. Really cute open back with neck button. Color is like really light mauve heading towards taupe. Def a neutral but with a tinge of lilac. Very Victorian feel!