If I could buy any piece this Spring, it would be a white boyfriend blazer, preferably in breathable linen. I love wearing blazers out at night, since even in the Summer I tend to get cold in air-conditioned restaurants, etc. And in Spring and Summer, my black blazer just isn't cutting it. You can pair a white blazer with pretty much anything, and it's going to look chic.
A cool tie-dye top like this one by Mac and Jac
...because I don't even need the excuse that tie-dye is in right now to wear it!
An aqua+purple outfit...like this one from forever21.com
A maxi dress in a boho print, like this one from Fred Flare