1. Breasts get fat. In your 20s, your boobs are made up of fat, milk glands and collagen -- the connective tissue that keeps them firm. "But as you age, the glands and collagen shrink and are replaced by more and more fat," explains Laurie A. Casas, a plastic surgeon and associate professor of surgery at Northwestern Feinberg School of Medicine. Instead of making your bra size go up, however, the added flab can send breasts down, closer to the floor, if you catch our drift. Wearing an underwire bra (whether you're an A-cup or a D) can help fight -- but not stop -- sagging over time.
10. They can get sunburned even if you're not topless. "Bathing suit fabric can be pretty sheer. Your bikini top probably provides only a paltry SPF 5 or 7," says Dr. Jaliman. So slather your girls with sunscreen with a minimum SPF 15 plus UVA and UVB protection each time you hit the great outdoors in your bathing suit. Without it, you'll rack up sun damage such as premature wrinkling and brown spots.
Source: Cosmopolitan Magazine