Jon GosselinAnd Kate Gosselin You can put an eight in front of a one.

You may feel old with this news: Here are six of the reality star’s youngest kids Aaden, Collin, Joel, Alexis, HannahAnd Leah Turned Age 18April 10. Yes, that’s right! And to celebrate the occasion, Jon shared a throwback photo of the sextuplets to Instagram Stories, writing, “Happy 18th birthday! We’re going to shout it loud today because it is your birthday. “I love you, Dad.”

The former couple—who are also parents to 21-year-old twin daughters, CaraAnd Madelyn—welcomed their sextuplets in 2004, just three years before the premiere of their TLC series, Jon & Kate Plus 8. (One month after their cancelled show was announced by the network, the couple split.

Although Kate and the rest of the family haven’t posted on social media in honor of the big day just yet, Hannah revealed to InTouch Weekly She recently attended a Miami “dream” birthday party.