I am now one of the lucky ones to own this jacket!
It is by Banana Republic and is size XS.
As with all of their clothing it does run about one size large; I'm usually a Small in most brands and an XS in Banana Republic and some Anthro brands. The XS in this jacket fits me PERFECT. I can comfortably layer this jacket with a hoodie.
If you are normally an XS you could be sized out of this jacket unless you find one in Petite sizing.
I also have Alice's Anthropologie Sparrow Dress in screen accurate color size Small, and that fits perfect. I may or may not update my LJ with it and some other goodies. I'm undecided and feeling a bit lazy when it comes to updating this old thing. I probably will when summer rolls around.
I hope everyone is well,
Annabella