Julia Roberts Good Genes or Good Docs?

3/22/2009 4:00 AM PDT

Julia Roberts: Good Genes or Good Docs?

Julia Roberts became a superstar with "Pretty Woman" ... and today she's an even prettier woman!

Here's the 21-year-old starlet back in 1989 (left) -- and 20 years later, the 41-year-old mother of three at her latest premiere in L.A. last week (right).

We'll drink your juice, Shelby!

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