Skai Jackson has literally grown up right before our eyes. It's amazing! She recently posted a photo on Twitter where she looks like a full-fledged adult, and it's so shocking to watch her glo up like nobody's business. Since we watched her as a little kid on Jessie, her transformation is especially pronounced. Skai is a teenager now!

In honor of Transformation Tuesday, check out some of the most shocking celebrity transformations. Remember when they looked like they did on the left? Well, they do not look like that anymore. For instance, Ariana Grande has completely switched up her look. While she used to rock curly hair, now she's all about her signature high ponytail. The titular baby from Good Luck Charlie, Mia Talerico, is in elementary school now — she's a baby no more! And while Noah Cyrus has been walking the red carpet for ages, she's fully come into her own style now.

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Click through the gallery to see your favorite female stars transform right before your eyes. Let us know which transformation shocked you the most!

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