Exactly when does Gracie show up?

[Cazqui]

Is there a specific season or what?

 

[JasonBurrows]

If Animal Crossing New Leaf is anything like the previous games, Gracie could show up on any date.

 

[twerkstrider]

you must have upgraded to TIY and have spent 70, 000 bells in store~ then gracie will show up randomly to give you her fashion check!