Twenty years ago today (October 23), the world heard Britney Spears' music for the first time. We can all remember (those of us old enough to remember anyway) the peppy 16-year-old who made us think differently about going to high school when she dropped her "...Baby One More Time" video. The latest pop diva had arrived.

To commemorate the milestone anniversary, Brit posted a heartfelt message on her socials, along with a nostalgic throwback behind the scenes video of that iconic music video shoot.

"It’s hard to put into words what today means to me… 20 years ago, the world heard my music for the very first time!" she gushed in her post. "So much has happened since then… but what I really want to say is thank you to my amazing fans who have been there for me since day 1. Your support over the years has meant the absolute world to me!! Love you all!"

AND WE LOVE YOU, BRIT (even though you're making us feel really old.)!