Sarah Michelle Gellar didn't get her daughter a bus pass for her sweet 16, that's for sure! And it's got everyone's feathers ruffled! On Instagram Friday, the Buffy the Vampire Slayer star shared that her and Freddie Prinze Jr.'s daughter Charlotte turned 16! Can you believe how time flies?! In the sweet post, SMG wrote: "16 years ago today, you made me a mom. I believe the quote is ... a daughter is just a little girl who grows up to be your best friend. Charlotte, you are that and so much more.