I am a 34 DD and can no longer wear underwire bras due to costochondritis. I watched the video for the invisible lift up bra and thought this may be the answer to the problem. I ordered the 2XL/3XL size because I find that everything runs small. I'm not sure this size would of fit if I were a B cup. Besides being way too small, the adhesive came undone after walking 12 feet from my bathroom to my closet. Total waste of money and no refund possible because they are an undergarment. I saved $2 dollars on amazensave but lost $12 when I should of bought them on Amazon which offers free returns.