Credit: Twitter

Can you believe how fast the kiddos of Teen Mom Nation are growing up? These little tykes have morphed from screaming infants into toddlers — and the latest mini-me to reach a major milestone? That would be Katie Yeager's insanely sassy and adorable daughter, Molli.


Credit: Katie Yeager on Instagram

This little lady turned three on August 18, and Katie's almost as shocked as we are by how time flies. This gal documented her sweet daughter's big day on Twitter, posting more than a few photos from her party.

Our favorite? This gem of Molli seeing her surprise for the first time. Look at that face! It's literally the face we make whenever there's a bag of Cheetos in the immediate vicinity.

Unfortunately, it doesn't look like Molli's dad, Joey Maes, was around to celebrate his daughter's big day. This dude has been estranged from the family since he and Katie parted ways, and it appears as though he's currently living in California.

Hopefully, Joey remembered Molli's birthday and sent her a fabulous gift in the mail, but judging from a series of angry musings from Katie, we're thinking he didn't.

Sigh, at least Molli got to celebrate turning three with the best mom ever!

Can you believe this kiddo is growing up so fast? She'll be in Kindergarten before we know it!