About a year after cleaning out my closet and donating a bunch of clothes, I realized something: everything leftover felt kind of boring, and I needed to add more whimsical items, STAT. Perhaps the bright yellow pants I once owned were no longer a fit, but I often think about Julia Roberts‘ breezy striped bottoms, wishing the same style sat in my wardrobe. The star’s bold, black-and-white pick — which, yes, she wore way back in 1993 — has remain…