Bradley Cooper Good Genes Or Good Docs?

12/4/2016 12:00 AM PST

Bradley Cooper’s good looks are proof that there's a 'Silver Lining' to aging!

Here’s a 26-year-old version of the slightly stubbled “Wet Hot American Summer” star at a party back in 2001 (left) and 15 years later ... the fully bearded brunette at a recent charity event in Los Angeles (right).

Limitless!

The question is ...