They say that 40 is the new 30, and by the way these over-40 celebs have aged, many would likely agree. But how do they do it? How does one maintain the body of a 20-something when approaching 50? And how does a woman keep her hair so soft and supple when her peers are going coarse and gray? Genetics have something to do with it, of course, and so does access to quality products. Still, the over-40 celebrities featured here admit they have a few tricks up their sleeve to help maintain their youthful visage.