Credit: Jonathan Cheban/Instagram

It’s Jonathan Cheban’s birthday! And while that’s not shocking news — everyone has a birthday, after all — we have to admit we did a double-take when we found out how old he is today. Lordy lordy, Kim Kardashian’s bestie is 40!

Okay, we know 40 isn’t exactly geriatric, but we were surprised to learn Jonathan was the big 4-0. Kim’s 33, so we guess we assumed Jonathan was in his early to mid 30s too. He certainly doesn’t look a day over 35, anyway — way to take care of that skin, Jonathan!

The entrepreneur and sometime reality star marked the milestone birthday with friends in a celebratory lunch at NYC’s Cipriani restaurant. Kim, who was in attendance, also took to Twitter to wish her BFF an awesome day. Judging from Jonathan’s Instagram, they toasted the day with some delicious looking pink cocktails.

The fun doesn’t stop there. Jonathan will be partying at the Mohegan Sun just a couple hours outside of Manhattan, where DJ Joe Bermudez will spin some great dance music into the wee hours of Saturday morning. We guess you’re only as old as you feel, right Jonathan?

Were you as surprised as we were to learn Jonathan’s age?