No. 6 Store lilac floral dress purple size 2/4 small

Silk dress by No. 6 store. - so pretty! Can’t find a size tag but would best fit a size 2/4 in my opinion 18.25” armpit to armpit 47” long I wear a size 2 (XS) in J.Crew consistently - and it fits, but is too small in the bust (I’m a 32 DD). Would best fit someone with a C cup or smaller as silk does not stretch. Has pockets!