Carrie V-neck camisole in silk

Runs large--beware! I am normally a size small. I was swimming in the size small in this camisole--felt two sizes too big, easily. Gaping so much under the arms that you could see my bra cups when I slightly lifted my arm. Really disappointing because I wanted to love this...the silk is high quality. Will try exchanging for an extra small to see if that works better.