Intimate Decryption

Can I measure my bust size myself?

Can.
When measuring the size, first take off your bra, measure the upper and lower bust numbers (as shown in the picture below), and then subtract the two numbers. If the difference is less than 10cm, it is an A cup. For every 2.5cm increase, it will be an A cup. Add a cup position.
For example:

Upper bust = 90cm

Underbust = 75cm

Bust size = 75C (i.e. = 34C)

Is your bust size different from the functional underwear in the market?

The bust cup design has at least 10 cup positions from AA to I cup, and more than 100 sizes are enough.