Rob Lowe, 55
The “Parks & Rec” star must have borrowed from his character’s strict health regime because he hasn’t aged since his appearance as Sodapop Curtis in “The Outsiders.” At 55 years old, the Hollywood stud has starred in the “Austin Powers” franchise, appeared on “The West Wing” and currently provides the voice of Simba in “The Lion Guard.” Lowe is also the producer of “The Lowe Files” and “Mental Samurai.”