It is my pleasure to be the spoilsport who informs you all that real breasts don't look like these. Real breasts of this size would sag horribly even with extremely supportive bras. The only way real breasts would look this firm is if half of the breastmass is made up completely of hard silicone implants. They'd be made of industrial-grade silicone, the one you'd use to seal up cracks in your walls.
Yes, you can thank me for ruining your fantasies lol