Sarah Jessica Parker -- Good Genes Or Good Docs?!

And just like that ... Sarah Jessica Parker has still got it!

Here's the 21-year-old version of the ageless beauty with long locks of curls and giant hoop earrings at the premiere of the film "At Close Range" in Los Angeles back in 1986 (left).

And 35 years later ... The now 56-year-old actress strutted the red carpet for the highly anticipated HBO reboot, "And Just Like That...," in a top knot and gorgeous jewelry that pays homage to her iconic styles of "Sex and the City" in New York City earlier this week (right).

Get carried away!

The question is ...