Way too large
I'm usually between a S and XS and I went with a S because I have a larger chest. It runs HUGE. I don't think the XS would be small enough to keep. Had 4 extra inches of fabric when pinned to fit.
Response from Lulus.com:
Hello Kristin, thanks for your review! We're sorry to hear that this top didn't work out for you. At Lulus, we want you to feel comfortable and confident wearing our products. Our team of stylists (lulus.com/customerservice) would be happy to help you find items you love! Xo