Credit: Instagram

Time to pop open a few giant boxes of wine and party like it's 1999, because it's Alexandria Sekella's birthday! This Teen Mom 3 star turned 20 on December 4, which means she's officially graduated from teenagedom. Sob, kids these days. They grow up so fast!

So, how is Alex celebrating the big 2-0? With a giant vat of ice cream, obviously. "Well officially 20," Alex tweeted. "I'm gonna go eat a big bowl of ice cream n then crash in my big bed :) teen years are over!!!"

We assume Alex will be spending her birthday opening presents and chilling like a villain with her adorable daughter, Arabella. We can't think of a better way to celebrate! Well, other than making this quick list of three things we adore about Alex, which brings us to...

1. Her dedication to being an amazing mom to Arabella.
2. Her love for teaching and her commitment to professional dancing.
3. Her selflessness and willingness to sacrifice her time for other people.

With that in mind, happy birthday, Alex! Make sure to hit up this gal's Twitter to celebrate, and feel free to binge eat some cake in her honor.