by Leyla MohammedBuzzFeedBuzzFeed StaffAs a Celebrity Reporter, I cover everything from fashion and award shows to TV, film, and cultural conversations. From Adam Scott to Tia and Tamera Mowry, internet users have been left surprised by celebrities' real ages time and again. @theshaderoom / Via instagram.com Most recently, fans were left shocked to discover Reese Witherspoon's age after she celebrated a milestone birthday over the weekend. Nbc / Getty Images Of course, Reese has been acting for literal decades and is perhaps best known for her role as Elle Woods in Legally Blonde.