The website recently expanded its U.S. Yearbook Collection to include nearly 7 million images from thousands of schools across the country.
The database is designed to provide insight into family members' school years, says Ancestry.com executive vice president Josh Hanna, "and while you're searching, you might just find a famous classmate."
You can now find some famous faces including Will Smith, Jake Gyllenhaal, Justin Timberlake and Lebron James.
The site has more than class photos. There is even a picture of Lady Gaga's first communion.
The expanded U.S. Yearbook Collection became available Wednesday.
The Associated Press contributed to this report.