There are many different types of push up bras

There are many different types of push up bras. There are molded cup padded bras that offer only slight reshaping and a little lift on the underside of the breast. Some bras include pockets of air or water inside the bra that the breast is placed on top of, creating more lift and upward thrust. Balconette bras have become a popular type of push up, using a high, often flat baseline and tight, restrictive cup so the breast is lifted high and essentially rested on a shelf. This creates maximum lift and considerable amounts of natural movement.

Warning
Because push-up bras often have smaller cups with less coverage (so as not to be seen under a dress with a low neckline) much of the strain, especially for larger chests cheap sexy lingerie, gets placed on the shoulders. This can misalign the back and actually create significant problems with back health. For women with medium to large chest sizes, ensure that the push-up bra has enough support to not cause back damage.

Measure for cup size. Have teen stand straight with arms loosely at side. Measure around the fullest part of the bust with the measuring tape. Unlike measuring for band size, do not pull measuring tape too firmly—tape should be untwisted and have contact with the teen’s body all the way around, but not be binding.

Calculate bra size. Subtract the adjusted band measurement you found in step 4 from the cup measurement you measured in step 5. This difference will determine the bra size (for every inch of difference, cup size increases: A is equal to 1 inch, B is equal to 2 inches, C is equal to 3 inches, and so forth).
For example, if you determined that the teen’s band size was 34 inches (30 inches of measurement plus the added 4), and her cup measurement was 36 inches, subtracted that would leave a difference of 2 inches or a B cup. The correct bra size would be 34B.
Refer to the conversion chart in resources for more assistance.