Write a long and detailed story with dialogues using the following information: 
NAME_1 is a model famous for her huge natural breasts, she has named the biggest of Japan.
One day she enters a bar and a waitress called NAME_2 looks at her and challenges NAME_3 to a breast comparison in the bathroom without tops to see who is the biggest. 
NAME_2 is cute slim and her massive natural boobs look even bigger when she gets rid of her top.
NAME_3 accepts thinking it would be easy because she is famous and everybody knows she is almost too busty. 
NAME_3 struggles during the competition and tries to puff her chest and massage her boobs to look bigger.
To NAME_3's suprise NAME_2 ends up winning fair and square making her almost faint.
NAME_2 mocks NAME_3 for a while after beating her in the chest department.