Willie Garson's Son, Sex and the City Costars & Famous Friends Pay Tribute After His Death at 57

Sarah Jessica Parker shared a heartbreaking tribute to her late friend and "Sex and the City" costar Willie Garson on Friday.

Taking to her Instagram, the actress shared a series of photos of the pair while lamenting the loss of a "30 + year friendship" with the actor, who passed away following a pancreatic cancer battle on Tuesday.

"It's been unbearable," she began. "Sometimes silence is a statement. Of the gravity. The anguish. The magnitude of the loss of a 30 + year friendship. A real friendship that allowed for secrets, adventure, a shared professional family, truth, concerts, road trips, meals, late night phone calls, a mutual devotion to parenthood and all the heartaches and joy that accompany, triumphs, disappointments, fear, rage and years spent on sets (most especially Carrie's apartment) and laughing late into the night as both Stanford and Carrie and Willie and SJ."

She went on to say that she will replay their moments together, re-read every text from his final days and put their last phone conversations to paper.

"Your absence a crater that I will fill with blessing of these memories and all the ones that are still in recesses yet to surface," she added.

Parker then sent a sweet message to Willie's son, saying "My love and deepest sympathies and condolences to you dear Nathen. You were and are the light of Willie's life and his greatest achievement was being your Papa."

She concluded, "These were his last words to me. 'Great bangles all around.' Yes. Godspeed Willie Garson. RIP. X, SJ"​

According to his New York Times obituary, Garson died of pancreatic cancer.

"As Stanford Blatch, Carrie Bradshaw's best male friend, Garson was never at a loss for a caustic quip," the obit continued. "As his role evolved over the course of six seasons, Stanford was not only hilarious, but also vulnerable at times, as he struggled in his own efforts to navigate sex and the city."

His family also asked that, in lieu of flowers, donations be made to the Alliance for Children's Rights in his name.

Willie Garson, best known as Stanford Blatch on the HBO series "Sex and the City" and its films, has died. He was 57.

TMZ was the first to break the news.

Garson leaves behind his adopted son, Nathen, who also appeared to confirm the news on Instagram.

"I love you so much papa. Rest In Peace and I'm so glad you got to share all your adventures with me and were able to accomplish so much. I'm so proud of you," Nathen wrote. "I will always love you, but I think it's time for you to go on an adventure of your own. You'll always be with me. Love you more than you will ever know and I'm glad you can be at peace now. You always were the toughest and funniest and smartest person I've known. I'm glad you shared [your] love with me. I'll never forget it or lose it."

Though he never married, Garson became a father in 2009, when he adopted the then-7 and a half year old boy. "I was single, I wanted a child and while I was in a long-term relationship, she did not want to have babies. That is fine but I always wanted to be a father," he told Medium last year.

While he did choose to adopt an older child and has become an advocate for others to do so, he said he didn't expect a seven year old. That being said, he told the outlet it was "an easy decision" to adopt him. "The second I saw him I knew he was mine and he would be my son."

On the boy's 20th birthday in July, Garson wrote, "Happy Birthday to my little devil, an adult now, more than any concept of son I could have imagined, with the best heart I know. Love you more than I could imagine I am able to. May this next year of college be the springboard to your future, and know that I and many others are with you always. I adore you."

The actor got his start appearing on shows including "Mr. Belvedere," "Quantum Leap" and multiple episodes of "The X-Files," "Boy Meets World" and "NYPD Blue," before his debut on "Sex and the City" in 1998.

He would become a mainstay on the series, appeared in both of the spinoff films and has been seen filming for the HBO Max revival, "And Just Like That." The show is still in production.

"The 'Sex And The City' family has lost one of its own, our amazing Willie Garson," said SATC showrunner Michael Patrick King, per Deadline. "His spirit and his dedication to his craft was present everyday filming 'And Just Like That.' He was there -- giving us his all -- even while he was sick. His multitude of gifts as an actor and person will be missed by everyone. In this sad, dark moment we are comforted by our memory of his joy and light.”

SATC creator Darren Star also paid tribute to the actor. "Sweet, soulful and hilariously funny, Willie touched all of us with his big heart and generous spirit. The man behind Stanford was a loving father, a mensch to his friends and radiated kindness to all. He is gone much too soon."

Chris Noth shared a photo of Garson on set of the revival with Sarah Jessica Parker, captioning it simply, "Willie" with a heart and broken heart emoji. While Parker hasn't shared her own post yet, she did comment on Noth's, writing, "hank you dearest Chris. I'm not ready yet. Xxx."

Mario Cantone, who played Garson's husband on SATC, took to Twitter to honor his friend and colleague, calling him "a brilliant TV partner." Cynthia Nixon echoed Cantone's sentiments in her own post, writing, "We all loved him and adored working with him."

Kim Cattrall called it "a terribly sad loss to the SATC family" in her tweet honoring his memory. You can see their full comments below.

Kristin Davis shared a longer tribute, writing about how the two first met back in 1995 on the set of the "X-Files," where he "immediately" made her laugh. "Willie is beloved by our entire community. He was smarter and funnier than you ever would have imagined. We are bereft without him," she continued. "But I really want to pay tribute to his fearless commitment to single fatherhood. We spoke about being single parents through adoption often. And nothing gave him more joy and pride than his son Nathen. Nathen's strength and wisdom beyond his years are evident in his beautiful tribute to his dad. The outpouring of love is earned dear Willie."

Post-SATC, he starred as Meyer Dickstein on "John from Cincinnati" and played Mozzie on USA's "White Collar." More recently, he appeared on multiple episodes of "Hawaii Five-0" and "Supergirl."

His last social media post was on September 4, 2021 -- in which he reminded his followers to "BE KIND TO EACH OTHER......ALWAYS. LOVE TO ALL. APPROACH KINDNESS."

See more tributes below from his celebrity friends and former costars.