"Zoe is cute" means that the role of Zoe or the actor of Zoe attracts the attention of the audience or fans in a cute, childish or coquettish way in performance, performing arts or interaction. The word "selling cute" comes from Japanese, which means expressing yourself in a cute or charming way to attract others' love and attention. In the entertainment circle or online social media, "selling cute" usually means that a star or online celebrity shows himself in a blunt, exaggerated or lovely way in front of the public to get more attention and support. So "Zoe is cute" means that Zoe or Zoe's actor attracts the audience's love and attention in a cute or coquettish way in public or in the media.