>>99992634They're DDs. DDD if you want to be exceedingly generous. Her petite stature makes them seem bigger than they are, and volume is a factor here. If Pia was an entire foot taller she'd still be wearing a DD, just with a different band size. Same if she was shorter, she'd have a smaller band size but keep the same sized cups. They don't suddenly need larger cups because her ribs are small, are you stupid? That's like saying your diving helmet needs to be bigger because you have a thick neck. The part that connects to the suit might have to be adjusted, but your head didn't get bigger.
Do you have any idea what a J cup would even look like? She'd have to be like seven feet tall with the same proportions. Maybe taller.