We're on HIGH ALERT for ballerina tutus this summer, and Katy Perry is proving to be quite the tulle collector. Her tutu love began earlier this summer, when she wore a white one on July 30 for her performance at the MTV World Stage Live in Malaysia. Then, just this morning, she wore a pink one for her performance on the Today show. But the best part? Katy not only knows how to rock a tutu ballerina-style, but she's sly enough to actually pair the look with BALLET flats, for a ballerina look from head to toe.