How do you find out what celebrities are going to planet hollywood and when? ?

im going for mybirthday on september 20th and i want to know if any celbrities are going to be there when i am. thanks!How do you find out what celebrities are going to planet hollywood and when??
Planet Hollywood is just a chain restaurant and more or likely the closest you'll come to seeing a celebrity would be in the form of a picture. How do you find out what celebrities are going to planet hollywood and when??
Uhmmm....Which PH are you going to?



And celebrities don;t usually go there unless its for the opening of a new restaurant.....