Jeremy Renner wished his Marvel costar Paul Rudd a happy 56th birthday with a hilarious Instagram slideshow, writing "I raise a glass to you … you sexy SOB!" ...

Whether they're your friend or someone you only acknowledge in the break room, we've got you covered with these birthday ...

The relationships you have with your cousins are something special. They might be the siblings you never had or the family ...

If you've celebrated a birthday at your favorite restaurant, odds are the staff didn't sing you the Happy Birthday song you know and love -- for legal reasons.

Happy Birthday, my amazing little brother!" I hope I never disappoint you. 34. "Watching you grow up has been such an adventure. You’re one of the coolest people I know. Happy Birthday!" ...

The singer marked his mother Pattie Mallette's milestone birthday on April 2 Gabrielle Rockson is a staff writer-reporter for PEOPLE ... voice say, ‘Mom, can you pray?’ ” “Happy 31 ...

DENVER — One of Denver Zoo Conservation Alliance's most famous love birds is ... "He's just a happy guy," McKenzie said. Happy 55th Birthday to our fabulous flamingo, Freddie Mercury!

even a mariachi as they sing to you 'Las Mañanitas' instead of the traditional Happy Birthday song — and have you ever had your face smashed into your birthday cake as people yell, 'Mordida ...