Ballet flats are so last season, according to Olivia Rodrigo. After arriving back in New York City from her trip to Los Angeles for the Grammys, the singer dressed up in the ultimate ballerina dress.

Forget classic ballet flats; Rodrigo added some unexpected edge to the classic French footwear by slipping into a pair of Christian Louboutin’s Cassia Lace Up pumps. Featuring a satin square toe ...