19 Age-Defying Stars

Age in first photo: 20
Age in second photo: 48
Verdict: He's Uncle Jesse; of course he's ''Forever'' young.

Age in first photo: 25
Age in second photo: 40
Verdict: Yeah, the Neutrogena's working.

Age in first photo: 27
Age in second photo: 49
Verdict: There must be something in the Purple Rain.

Age in first photo: 24
Age in second photo: 44
Verdict: As Catwoman, she had nine lives. In real life, she may have even more.

Age in first photo: 23?
Age in second photo: 39?
Verdict: And this is why we've still got a crush on Jordan Catalano.

Age in first photo: 23
Age in second photo: 43
Verdict: Clueless writer/director Amy Heckerling's latest movie is about a pair of eternally hot, BFF bloodsuckers — and it's not a stretch to think that she might have been inspired by Dash's supernaturally unlined face.

Age in first photo: 27
Age in second photo: 54
Verdict: Maybe the lower your Bacon Number, the closer you are to immortality. Bacon's number, naturally, is the lowest of them all.

Age in first photo: 22
Age in second photo: 43
Verdict: Of course she's ageless -- she's an Angel, after all.

Age in first photo: 26
Age in second photo: 49
Verdict: The guy must be doing something right.

Age in first photo: 21?
Age in second photo: Five days shy of 33?
Verdict: It takes genes of steel to pull off playing a teenager for 20 years — but Pretty Little Liars actress Lawson has been doing it since her Saved by the Bell: The New Class days.

Age in first photo: 19
Age in second photo: 46 (one week before her 47th birthday)
Verdict: Did she suck just a little life out of Richard Gere while filming Unfaithful?

Age in first photo: 26
Age in second photo: 48
Verdict: Whoa.

Age in first photo: 28?
Age in second photo: 48?
Verdict: Her character in My Cousin Vinny is named Mona Lisa — fitting, since Tomei's face has proven as timeless as da Vinci's portrait.

Age in first photo: 25
Age in second photo: 44
Verdict: Theory: Men In Black 3 was real, and the man we all think is Will Smith is actually Agent J's time-traveling younger self. It'd make as much sense as that ending.

Age in first photo: 26
Age in second photo: 42
Verdict: She's really a well-dressed ageless goddess, underneath it all.

Age in first photo: 31
Age in second photo: 50
Verdict: 50 years old?! No way. He's either 35 or 350; there is no middle ground.

Age in first photo: 48?
Age in second photo: 64
?Verdict: Into the Woods knows what's up: a cow as white as milk, a cape as red as blood, hair as yellow as corn, and slippers as pure as gold are the keys to reversing the aging process.

Age in first photo: 20
Age in second photo: 48
Verdict: He literally stopped getting older after St. Elmo's Fire.

Age in first photo: 29?
Age in second photo: 41?
Verdict: How does the funnyman stay so baby-faced? We're Clueless.