I am always getting asked where I got this swimsuit from! I love the retro style of this suit and the deep v cut! Depending on the size of your breasts, this may or may not show cleavage and the swimsuit may or may not shift in that area. As you can tell, I am not the most endowed in the chest area, yet I didn’t seem to have anything exposed despite moving around in the suit. It shifted sometimes and I would get more side boob than I wanted when moving around, but it all stayed in the suit! It all depends on how tight you tie the halter straps. The material is of good quality and has held up through the many wears and washes. I ordered a size medium in black, but this suit comes in multiple colors and prints. For reference, I am 5'8" with a longer torso and am a size 4, sometimes 6.