Kailyn Lowry cannot imagine how far his son has come.

The previous Teen Mother star had a particular milestone to rejoice when her oldest baby Isaac turned 13 on Jan. 18.

“Now we have actually grown up collectively, however in some methods he is much more grown than I’m,” Kailyn wrote on Instagram. “Considerate, good, humorous and at instances a smartass are just a few phrases I might use to explain Isaac. I feel what actually evokes me about him is the way in which he challenges social norms.”

Kailyn described her son, who she shares with ex-boyfriend Jo Rivera, as curious, open-minded and somebody who “can kind his personal ideas and opinions.”

“Isaac additionally accepts folks for who they’re and by no means how they’re ‘supposed’ to be,” Kailyn continued. “Extra folks needs to be like him.” 

Kailyn, who additionally shares Lincoln, 9, with ex Javi Marroquin, in addition to Lux, 5, and Creed, 2, with ex Chris Lopez, handled her oldest to dessert from Baked’Em Bakery in Delaware and a birthday setup from The Get together Kween.