But why so grumpy, Miley? Word on the street is that first day sales of the record were over 100,000, which should put it straight in at #1 next week.

Maybe it's all the fame-hungry ankle biters nipping at the tween queen, eager to bump her off her throne.

Or it could be the looming fear that Katy Perry's gonna jam her tongue down Miley's throat at the Teen Choice Awards.

Either way, go count some mountains of cash and lighten up, baby.