Apparently legendary rock star David Bowie was onto something when he wrote the lyrics "Oh, look out you rock n' rollers! Pretty soon now you're gonna get a little older," for his hit 1971 song Changes!

From folk singers and hard rockers to heavy metal gods, these iconic musicians are just like us --­ they get older as the years go by! RadarOnline.com has shocking photos of the most famous musicians in the world, from the prime of their fame to the present day.

PHOTOS: Rock Stars Past & Present

This Irish singer got his start in Dublin, forming a band in the 1970s that would come to be one of the most successful groups of all times. Now a huge international activist, he and his band U2 are still ruling the Billboard charts.

A starlet who dated a host of famous Hollywood hunks has written an explosive kiss-and-tell about her experience, and she is talking only to RadarOnline.com.

PHOTOS: Peggy Trentini Sexy Pictures

Peggy Trentini was a model and actress in the 1990's, starring in movies such as Up the Creek and B-movies like The Assault and Carnal Desires.