Monday, teams and athletes will probably take to Twitter to celebrate the occasion, and as you can see some of the ways teams choose to celebrate the day will be very unique.
The Penguins, though, took a less creative approach on Twitter, but the result was still awesome as they let the hockey world in on Evgeni Malkin and Sidney Crosby's friendship.
Superstars don't always play well together or want to play together (Kyrie/LeBron, for example), but Crosby and Malkin clearly enjoy playing together and succeeding together.
The two have a special friendship to say the least, and with how active Malkin has been on Instagram and Twitter, we imagine an awesome birthday post could be coming Sid's way.
(H/T: Pittsburgh Penguins)
