If it is a shirt with buttons, you can keep two or three buttons at the bottom after all the buttons on it are buttoned. If you like to pursue sexiness, measure the navel height with a ruler and cut it with scissors.
Naked navel dress is a kind of clothing aimed at showing the flat curves of abdomen and waist, and it is a short coat that has developed to the extreme style. This is a classic style in the world. From 1996, the popularity of navel-revealing clothes in China was fantastic, and its strength was surprising: from scratch, it became popular in the streets in a few months. This is a typical fashion.