Why is judy described beautiful ugly in the winter dreams?

In F. Scott Fitzgerald's "Winter Dreams," Judy Jones is described as "beautiful ugly" to highlight the complexity of her character and the conflicting emotions she evokes in Dexter Green. Her physical beauty captivates Dexter, yet her selfishness and manipulative nature render her morally unattractive. This paradox reflects the theme of unattainable desires and the disillusionment that often accompanies idealized love, as Dexter grApples with his infatuation for someone who ultimately embodies both allure and emptiness.