Sure, we all love admiring Kate Upton's sexy supermodel curves and jamming to Selena Gomez's pop hits.

But did you know that the two beauties were actually the same age?! Believe it or not, they were both born in 1992.

Other surprising celeb duos who are the same age include Mad Men star Jon Hamm and charismatic Dallas Buyers Club Oscar winner Jared Leto. Both men were born 1971, which is startling since the 30 Seconds to Mars frontman barely looks 30!

Madonna and Freaky Friday actress Jamie Lee Curtis also share the same birth year (1958)—who do you think looks younger?