Kristen Aldridge from omg! Insider has given you a glimpse at some of Hollywood's ageless celebs.
Heather Graham, 43, Alyssa Milano, 40, and John Stamos, 49, all made the list.
Being there are quite a bit of stars in the entertainment world who seem to stay young, it would be nearly impossible for one list to capture them all. So we also took a hack at it, adding ten more middle-aged celebs to make the cut -- see the photo gallery below.