Molly Shannon -- Good Genes or Good Docs?

Molly Shannon’s good looks are nothing to joke about!

Here’s a 36-year-old version of the ‘SNL’ fan favorite at an event back in 2000 (left) and 17 years later ... the "Wet Hot American Summer: 10 Years Later" babe at a party in West Hollywood last month (right).

Superstar!

The question is ...