Hannah Gosselin

It's official, and it's officially unsettling for those who watched her as a child on television:

Hannah Gosselin is all grown up.

Hannah Gosselin turned 18 years old on Tuesday.

In related news, we feel VERY, VERY, VERY old.

When Hannah Gosselin was a young teenager, she was finally old enough to choose which parent should have custody.

Hannah chose her dad. At the time, Kate Gosselin reportedly raged over her daughter's autonomy. 

While Kate Gosselin's life kinda sucks now, things are going well for Hannah Gosselin.

Hannah is just about a month shy of turning 18. She's about to be an adult.

Recently, Jon Gosselin and Hannah took a trip from coast to coast.

The former reality star kept fans up to date on their journey with some cozy family photos.

It has been nearly a decade since Jon Gosselin was in touch with his twin daughters.

He is much closer with two of his children ... who are not close with Kate at all.