ST. LOUIS — St. Louis’ most famous Blues fans are showing the world how much they bleed blue.

From actors to athletes, celebrity Blues fans shared their excitement, joy and congratulations on social media after the Blues won the Stanley Cup for the first time in team history.

Jenna Fischer, known for portraying Pam on ‘The Office,’ was spotted at several Stanley Cup games cheering on her hometown Blues. She gave a big shout out to all Blues fans and the team on Twitter.

“I love you St. Louis! I love all of you who watched this game at Enterprise Center. I love all of you who watched in the pouring rain from Busch Stadium. From viewing parties and at home! We All Bleed Blue! Congratulations @StLouisBlues Stanley Cup Winners!

READ MORE: Jenna Fischer: 'I love you St. Louis!'

Fischer didn’t stop there. She cooked up a sweet way to celebrate the Blues’ victory. The NHL tweeted a video of her writing ‘GLORIA’ in icing on a blue cake.

Fischer had been in a bit of a Twitter rivalry with her TV husband from ‘The Office.’ John Krasinski is a big Bruins fan and was at Game 7 Wednesday night. He tweeted a sweet message to Fischer and St. Louis fans.

"Well, a big congrats to everyone in St. Louis. A tough loss, but a momentous occasion! Great series! Next time Fischer... next time."

Fischer’s TV boss also weighed in. Steve Carell, who played Michael, tweeted a photo of him wearing a Bruins hat earlier Wednesday. When the Bruins lost, he wrote “Congrats #STLBlues, and of course @jennafischer! What a great playoff!”

Andy Cohen didn't tweet his excitement after the Blues won—he lived it on the ice with the players. 5 On Your Side caught up with Cohen as he celebrated with the team.

"It couldn't be better! I would not miss it for the world," Cohen told Ahmad Hicks.

One St. Louis celeb who's been with the team the whole way and has been noticeably absent, is Jon Hamm. He's famously made friends with the players and gone to several Stanley Cup Final games, but he wasn't spotted at Game 7 and he doesn't do social media.

St. Louis native and star of NBC’s ‘This Is Us’ Sterling K. Brown tweeted his support Wednesday night.

“Way to go, Blues!!!!!!”

And several local sports stars celebrated their fellow St. Louis athletes.

Adam Wainwright wrote a heartfelt congratulations on Twitter.

“So happy for the @StLouisBlues organization, this great city, all the great people who’ve been looking forward to this for so long, and the amazing players who inspired us all year!  Proud of my buddy Petro for being an incredible leader!!!” the Cardinals pitcher tweeted.

Yadier Molina got in on the excitement on Instagram writing, “lets go champs!!!! go BLUES”

And his brother Bengie shared a live stream of the Cardinals clubhouse celebrating the Blues’ victory with a ‘Let’s Go Blues’ chant.

Cardinals outfield Tyler O’Neill wrote one big ‘GLORIAAAA!!!” on Twitter.

Former St. Louis Rams player Chris Long wrote simply, ‘IMMORTALITY.’

While former St. Louis Rams quarterback Kurt Warner had a few more heartfelt words of inspiration for the Blues and St. Louis.

“Congrats to the @StLouisBlues & city of STL on winning the Stanley Cup... been a long time coming, but that only makes it sweeter! No greater place to enjoy a championship! Enjoyed the ride from afar... and will enjoy watching you all celebrate, miss you STL!” he wrote on Twitter.

St. Louis natives and basketball stars Jayson Tatum and Bradley Beal were so hyped for the Blues and this city.

They both tweeted moments after the Blues won and said 'STL FOREVER.'

Wildwood native Luke Voit, who plays for the Yankees, shared his excitement on Twitter with a call to play Gloria.

Speaking of Gloria, the manager behind the account for the late-singer Laura Branigan shared how much this Blues playoff run meant to her.

“Early on when I realized there was something very special here w/ the @StLouisBlues & “Gloria,”it was natural to become involved & interact w/all of you, & that has led us to this celebratory point!” Kathy wrote.

And then, there’s the Prince of Darkness himself. Ozzy Osbourne, who famously wore a St. Louis Blues shirt in a mugshot, tweeted a more up-to-date photo of himself rocking the Blue Note. He tweeted his congratulations while wearing a Blues jersey.

And finally, the ‘celebrity’ of all celebrities. The recognition St. Louis wanted the most: a tweet from the official Stanley Cup Twitter account.

“They say good things come to those who wait. 52 years later... @StLouisBlues I’m all yours.”

Top Blues stories people are reading right now: