The standard size of her breasts, meaning she hasn’t ingested any dairy in the last week and no other factors have caused her to produce more milk, are between at least 4-5 feet in diameter each, reaching down just above her ankles and rising just below her chin. As for heavy they are, I may need to call upon the anonymous mathematician to provide a proper estimation.

Now onto how much milk she carries, a rule of thumb you must follow is that she is NEVER empty, constantly producing it even when she hasn’t eaten any dairy products. That being said, the standard amount she holds is roughly eight gallons of milk, though she has been known to fill whole tubs on occasion!