I am also a petite B, and agree that we can wear this look successfully. However, I would make certain to buy petite tunics...sometimes it is tempting to buy regular sizes, but I think length is critical to pulling off this look.It can look way out of proportion to have a too long top. I have 3 petite tunic tops that are more tailored looking, because I don't think I can pull off the flowy kind...it adds at least 10 pounds n my frame and that's no good!!!
And I agree with CatherineK above, a belt can be flattering or a tunic with a shape of some kind; for example, petite tunic tops with a drawstring waist works well.
It is such a comfortable look...have fun with it and enjoy!!!