Jeffrey Campbell Ensue gingham mule sandals with a kitten heel. Kitten heels from Jeffrey Campbell in allover gingham. Topped with a bow at the rounded toe and finished with an open mule back. Since 2000, Campbell and his wife Christina have created footwear that’s at once accessible, comfortable, and fashion-forward, delighting their fans with a constant stream of new styles that reflect an uncanny ability to anticipate upcoming fashion trends.