Bruno Mars

Every day is another chance to stump your friends with some music trivia. I was pretty surprised when I heard that Miley Cyrus didn't write, "Party In the U.S.A." I'm not sure I can ever listen to it the same again. Just kidding, I can totally still rock out to that alone in my car.

Warning: The following story and accompanying video are serious tearjerkers.

For Mother's Day today, several of our favorite stars -- including Demi Lovato, Channing Tatum, Rihanna, Miley Cyrus, Justin Bieber, Britney Spears, Lucy Hale, Kim Kardashian -- tweeted Happy Mother's Day wishes to their moms and moms around the world, and also shared some private photos with their moms. Here are some of our favorites:

This baby starts the morning with an amazing Bruno Mars dance party. If you think the first few seconds of his booty poppin' is cute, just wait until you see his face!

Bruno Mars, fresh off his most-watched Super Bowl performance, followed up with a visit to 'Ellen.'

Crooner Bruno Mars provided the halftime entertainment for Super Bowl XLVIII with an assist from the Red Hot Chili Peppers and a children's choir, the members of which held hands as they sang like cherubs for the first 30 seconds.

I missed Bruno the last time he came through with Ellie Goulding... Not this time! 2 chances to catch Bruno Mars in June with Aloe Blacc (the singer on Avicii's Wake Me Up)