Jennifer Garner: Good Genes Or Good Docs?!

Jennifer's good looks have continued to garner more beauty throughout the years!

Here's a 28-year-old version of the "Alias" actress at a fancy movie premiere back in 2000 (left) and 15 years later ... the mother of three -- who turned 43-years-old last month -- at a hearing in Washington D.C. earlier this year (right).