Nirvana Cover Baby All Growed Up ... 25 Years Later

9/24/2016 1:05 PM PDT

Nirvana: Cover Baby All Growed Up

Nirvana fans will feel REALLY old after this one -- the group's groundbreaking "Nevermind" album turned 25 Saturday -- and the cover baby's got a beard!!

Spencer Elden, now a 25-year-old with long hair and scruff did a shoot with photog John Chapple to honor the anniversary.

A lot's changed since then ... but one thing's for sure, the album is still legendary.