Lisa Rinna Good Genes or Good Docs?

0712_lisa_rinna_good_genesLisa Rinna is lookin' nifty for fifty. 

Here's the 32-year-old "Days of Our Lives" actress at an awards show back in 1995 (left) -- and 18 years later the now 50-year-old mother of two was spotted at a fund raising recently looking comely (right).

The question is...