Rob Lowe Good Genes or Good Docs?

9/28/2009 1:45 AM PDT BY TMZ STAFF
Rob Lowe sho iz pretty.

Rob Lowe
Here's the 21-year-old Brat Pack member back in 1985 (left) -- and 24 years later, the 45-year-old version at the Emmys last week (right).

He must really have "Youngblood."

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