In Hollywood, it can seem like some industry heavy-hitters simply do not age. What gives? While some attribute their agelessness to a healthy diet, others credit drinking plenty of water and regular exercise, while some might just be genetically blessed. But whatever the secret, one thing is for sure: whatever they’re doing is working.

From Jennifer Aniston’s gorgeous glow and Elle Macpherson rocking body to Paul Rudd’s forever baby face, when it comes to these A-listers — 50 is the new 25.

Take a look at our favorite celebrities who haven’t seemed to age a day in decades…