Eeeyup. Princess of silliness.  
[Well if we use ponies and boobs in the same sentence that would technically means we are talking crotch-boobs and we dont want to go that way fortunately I know what you mean, and the answer is nope, the royal puppies are off the charts. Pinkies tatas are that big because all the sugar she eats goes up there (some goes to her hips too but mostly to her knockers)  
Tadmod dude, you have no idea how much that made me laugh and now that Ive the song stuck on my head Im eagerly awaiting for the rest of the lyrics. Dont let me hanging compadre! :3  
PS. A stand for almost boobs and G for gravity field