0328_claudia_launchHard to believe the two photos above were taken over 20 years apart!

Supermodel Claudia Schiffer was only 19-years-old when she posed for a provocative line of ads with Guess back in 1989 ... and now, at age 41, she looks just as incredible.

The clothing retailer tapped Schiffer to be part of their 30th Anniversary campaign, dubbed 30 Sexy Years!, where she poses once again for a series of black-and-white pictures taken by photographer Ellen von Unwerth.

In case you can't tell, the new one is the one on the right.

Check out another sexy shot from the new campaign in the gallery above, plus see how other supermodels from the '80s and '90s have aged since then!

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