Jamie Lee Curtis: Good Genes or Good Docs

Jamie Lee Curtis is scary hot.

Here's a 25-year-old version of the knife wielding "Halloween" actress at an awards show back in 1983 (left) and 32 years later ... the "Scream Queens" regular and mother of two -- who is celebrating her 57th birthday on Sunday -- at a fancy LA gala late last month (right).

Birthday bae.

The question is ...