Sigourney Weaver: Good Genes or Good Docs?!

11/1/2009 10:20 AM PST BY TMZ STAFF
In "Aliens," Sigurney Weaver was revived after spending 57 years in hypersleep ... but you'd never know it.

Sigourney Weaver

Here's the 32-year-old back in 1981 (left) -- and 28 years later, the 60-year-old version in Japan recently (right).

She's workin', girl!