Hats are an under-appreciated accessory (unless you're Kate Middleton, in which case they're constantly celebrated). While they might not get a lot of shelf space in our own closets, they've commanded our collective attention plenty when it comes to pop culture, celebrity, and news moments. First Jackie Kennedy's most iconic item? Easily the pillbox hat. You're not alone if your elementary-school self had a fascination with floppy, flower-topped crusher hats. Credit goes to Mayim Bialik, who…
