What's the difference between an hourglass figure and an S figure?
The hourglass figure is characterized by big chest, thin waist, hip breadth and full thighs, which is a perfect figure with graceful waist and buttocks.
The letter "S" has a protruding part above and below, the upper part refers to a woman's chest and the lower part refers to a woman's buttocks.
Some people also use the vulgar expression "stand forward and pout back" to describe a woman's figure.