First Mean Girls [1], now Facebook. The most dominant social networking platform of the past decade turns 10 today, which officially makes us feel . . . really old. CEO Mark Zuckerberg, who is celebrating a big milestone birthday himself this year (the big 3-0!), is of course extremely sentimental about the whole thing and wants you to join in on the fun.

Enter: A Look Back [2], a new feature by Mark and team that takes you deep into your Facebook archives.

See your first posts, most liked statuses, and most liked photos — all backed by a cinematic, feel-good score. It's very Top Moments of Instagram [3] à la Statigram, and this video time capsule will either make you cry or feel extremely embarrassed for your past self.

Just head to facebook.com/lookback [4], then sign in with your Facebook credentials if you haven't already. Your Facebook highlight reel is already good to go . . . just hit play.