Credit: Kailyn Lowry on Instagram

It's official, guys: Isaac Rivera is back in school after a summer of fun in the sun! We know, we know — it's an emotional time for all of us Teen Momaholics, sigh.

After all, wasn't it just yesterday that Isaac was curled up in his mommy's arms and throwing tantrums during the terrible twos? How has time flown by so quickly?!


Credit: Kailyn Lowry on Instagram

Isaac only has one more year until he becomes a full-fledged kindergartener, but the good news? This little dude is going to be the most stylish kid in his class once he hits the big leagues of elementary school.

Not only is Kailyn Lowry's 4-year-old son rocking the most amazing hair cut ever, he might just have the best wardrobe of any child in Delaware.

Check out this photo of Isaac's back-to-school outfit — which he picked himself! He’s rocking a cool graphic T-shirt, some mustard yellow pants (because plain denim is for peasants), and a casual unbuttoned chambray shirt. Um, this child could not be more fly if he tried.

"He's old enough to know what style he likes to rock!" Kailyn posted to Instagram along with this photo. “[JCPenney] had everything we were looking for and I found things for myself too! Can't wait for his first day back!"

All we know is that the ladies of pre-K just aren't safe with Mr. Rivera around! What do you think of Isaac's styling first day outfit? Tell us in the comments below!