I got a star dust for my pet, it says that he is stardust but it doesnt show up on him /her...just wondering if there is a default in the Comet Festival??
I'm assuming it is the chimby. It's not showing up because it's a baby. Stardust effect only shows on adults. You either have to wait until it's fully grown or find someone with a regression ray (r-ray) to zap your pet to adult.