Grant is exactly one day older, but the British stars, who memorably vied for Renée Zellweger's hand in Bridget Jones' Diary and had equally adorable story lines in Love Actually, were both born in 1960!
Both actors were born on Aug. 28, 1969, but the Beverly Hills 90210 star burst into our lives a generation ahead of the School of Rock funnyman.
Both were born Aug. 18, 1969. Slater's seemingly been around a lot longer, bursting into our lives in Heathers and Pump Up the Volume when we were wee babes. And Norton didn't burst into our lives until...oh, Primal Fear was in 1996. But he's got that baby face...Gah!
It's hard to believe the teen bride is actually six months younger than the actress. Both were born in 1994.
These beauties were both born in 1980.
The Hunger Games star and the Modern Family actress were both born in 1990.
The British actress and comedic star were both born in 1951.
The Rum Diary actress and former Disney star were both born in 1986.
The Oscar-winning mother-of-three and the Sharknado actress were both born in 1975.
The foxy actress and twin stars were all born in 1986.
Believe it or not, the child star and the Grammy winner were both born in 1988.
The Sex and the City star and Unfaithful actress were both born in 1965.
The Harvard-educated actress and Grammy award-winning singer were both born in 1981.
The "Come and Get It" singer and the Sports Illustrated supermodel were both born in 1992.
The West Wing star and Leaving Las Vegas actor were both born in 1964.
The One Direction rocker and American Horror Story actress were both born in 1994.
The Hunger Games actress and Real Housewives of Beverly Hills star were both born in 1960.
The Friends beauty and the Blue Jasmine Oscar winner were both born in 1969.
The edgy Gossip Girl starlet and the adorable "Right There" crooner were both born in 1993.
The "Material Girl" singer and the Freaky Friday actress were both born in 1958.
The "Boyfriend" singer and Twilight actress were both born in 1994.
The Nashville actress and the country songbird were both born in 1989.
The Departed actor and Will Smith's better half were both born in 1971.
The bubbly "Call Me Maybe" singer and the British beauty were both born in 1985.