Kelly Ripa: Good Genes or Good Docs?

Kelly Ripa is the hostess with the mostest.

Here's the 20-year-old former "All My Children" star back in 1991 (left) -- and 21 years later, the 41-year-old "Live! with Regis & Kelly" host at an Oscar party in February (right).

She really knows how to put on a good show.