Katy Perry Tweeted THIS PHOTO.
Buy the same exact outfit here:
Her dress is the Rave Review Shroom belted checked wool maxi dress. Buy it here: NET-A-PORTER
Her boots are the Balenciaga Cagole Leather Ankle Boots. Buy them here: BALENCIAGA, CETTIRE, SAKS FIFTH AVENUE, and FARFETCH
Get the look for less here: