I absolutely love the Lunar Cycles Top from Anthropologie. It's a little boho/70's, a little lacy/feminine, and in a nice solid that can be accessorized a million ways. Flowy and light to keep you cool, but not shapeless. I was really happy to find it in-store after seeing that it sold out online pretty quickly. There may still be some in stores, but during my hunt I discovered that it is by The Addison Story and is available in "ivory" (I'd call mine white) at Saks Fifth Avenue online (currently in XS, S and M). The Saks description says theirs is an exclusive and comes with a camisole underpinning - the one I have from Anthro did not.
I wore this when we visited Pearl Harbor last week.
Anthropologie Lunar Cycles Top in size small (Old Navy white tank under), Paige denim, Jack Rogers, Louis Vuitton Eva, Kendra Scott Danielle earrings
The Kendra Scott Danielle Earring in Turquoise