You cannot place a new order from your country. EE.UU.
If you have doubts about the size, you can be guided by these measures.
To measure your bust, surround the bust area with a tape measure below the armpit and the most protruding part of the chest.
The measurement of the waist is obtained by surrounding the narrowest part of the waist at the level of the navel.
Measure the outline of the hip by the widest part of it.