We know that yesterday was national sibling day, and while our besties are not necessarily blood related, aren't they basically siblings by choice? A best friend sticks by your side through thick and thin, through hell or high water, through bad hair days and outfit malfunctions. Really, where would we be without them? So, in honor of our honorary sisters & bros, we've put together a list of the best friendships on TV. Grab your besties and click through these notable pals.