InstagramHappy birthday, Penelope Disick!
Kourtney Kardashian and Scott Disick's baby girl has literally grown up right before our eyes, but it's still hard to believe she's already turning 4 today!
Over the years, little P has made our hearts melt with her adorable mermaid adventures with cousin North West, her sweet family photos with her brothers and aunties and her killer style (courtesy of mom, of course). Seriously, just peep all that swag in exhibit A above!
So in honor of the mini fashionista's special day, let's celebrate with some of her cutest photos of all time!