Katy Perry Retweeted THIS clip from her appearance on Good Morning America.
Her headband is the Lelet NY Neon Padded Headband. Buy it here: SHOPBOP
Her dress is the Simone Rocha Puff-sleeved floral-embroidered organza dress. Buy it here: MATCHES FASHION, FARFETCH, and NET-A-PORTER
Get the look for less here: