Sam & Cat stars Ariana Grande and Jennette McCurdy are BFFs onscreen and off, but did you know that these two Nickelodeon cuties share the same birthday? And it's today! Ariana turned 20-years-old today, and Jennette turned 21. Jennette is celebrating the day by taking a trip to Las Vegas, while Ariana planned a Harry Potter-themed party for herself!
Happy Birthday Ariana and Jennette!