Credit: Twitter

Stop everything you're doing and immediately shove a fist full of chocolate cake into your mouth. It's Leah Shirley's 4th birthday!

This little lady has been lighting up our lives ever since she burst forth from Teen Mom Amber Portwood's womb, and we can't believe how fast she's growing up. Time flies when you're picking organic watermelons with your dad all day, right guys?

Leah and her dad Gary aren't celebrating her big day until next weekend, but it looks like she's having a blast frolicking in the winter weather. "Leah gets snow for her bday," Gary tweeted on November 12. Um, adorable — though we fear for boyfriend's crops.

Let's hope Baby Leah has a great 2013!

Source: Twitter

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