We blinked… and now they're no longer babies!

Teen Mom 2 star Jenelle Evans showed off her adorable sons in a new Instagram pic — and we can’t get over how much Jace, 6, and Kaiser, 1, have grown!

The 23-year-old reality star gave fans a glimpse into their family bonding activities. How stinking cute are they?!

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Jace just celebrated his birthday and Kai is bigger than ever!

These two aren’t the only kids who’ve grown up before our very eyes!

Click through the gallery to see ALL the Teen Mom kids then and now!