Posted 5 minutes agoIn Case You Wanted To Feel Old Today, Here Are 39 Famous People Who Turn 40 Years Old In 2026It's wild to me that Lady Gaga is about to turn 40.by Lauren GarafanoBuzzFeed StaffFacebookPinterestLink One thing about me is that I am extremely fascinated by celebrity birthdays and ages. And just out of plain curiosity, I wondered, which famous people are about to turn 40 in 2026? And just in case you wanted to feel old today, lemme tell you: 1. Lady Gaga Arturo Holmes / Getty Images Birthday: March 28How you know her: She's literally Lady Gaga. 2.