Ok! So this top is incredibly cute with one strap that shapes into a bow! This is too cute for words so I am just going to tell you where you can find it!
It's from JCrew and is available now on sale for $69.50 for the next 48 hours. I'm wearing the 00 and my normal size is XS!
https://www.jcrew.com/p/womens_category/shirtsandtops/sleeveless/oneshoulder-bow-top-in-stripe/G8182