Nathen Garson, the actor's son, took to Instagram to share an emotional message of love, alongside a slideshow of photos and videos of his dad.
"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," Nathan wrote. "I’m so proud of you."
"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," he continued. "You always were the toughest and funniest and smartest person I’ve known. I’m glad you shared you’re love with me. I’ll never forget it or lose it."
Mario Cantone, whose character Anthony Marentino marries Garson's Stanford Blatch character in the Sex and the City 2 film, took to Instagram and shared a snapshot of himself and Garson, dressed to the nines, and smiling for the camera at a black tie gala.
"I couldn’t have had a more brilliant TV partner. I’m devastated and just overwhelmed with Sadness," Cantone wrote. "Taken away from all of us way soon. You were a gift from the gods sweet Willie. Rest …I love you."
Sex and the City star Cynthia Nixon also shared an emotional tribute as well, alongside a throwback photo of herself and Garson. Nixon wrote, "So deeply, deeply sad we have lost @Willie.Garson. We all loved him and adored working with him. He was endlessly funny on-screen and in real life."
"He was a source of light, friendship and show business lore. He was a consummate professional— always," she continued. "My heart goes out to his son, @Nathen_Garson. Nathen, I hope you know how much he loved you and how proud he was to be your dad."
Kim Cattrall took to Twitter to share her condolences for the loss, along with a photo of herself and Garson from an episode of Sex and the City.
"Such sad news and a terribly sad loss to the SATC family," Cattrall wrote. "Our condolences and RIP dear Willie xo."
Additionally, Kristin Davis posted a lengthy message to Instagram in honor of her SATC co-star that reads, "I first met Willie in 1995 on the spooky nighttime set of the X-Files. He immediately made me laugh. Little did I know that we would have the joy of sharing Sex and the City + And Just Like That together. Willie is beloved by our entire community. He was smarter and funnier than you ever would have imagined. We are bereft without him. 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. I am thankful for all of the time we had and grateful that so much of your bright light is on film forever. Maybe we can do our pod cast the next time around ? We love you forever xoxo."
Andy Cohen paid special tribute to Garson on Tuesday's Watch What Happens Live, in the closing moments of the show, where he was joined by Anderson Cooper.
"On a serious note, it is time for my Mazel of the Day," Cohen shared. "It goes to Willie Garson, best known for playing the iconic Stanford Blatch, on Sex and the City. Willie passed away today at the age of 57. Like the rest of the world, I adored Stanford's relationship with Carrie."
"Willie Garson was a really nice guy, he was a great guy, and he was a loving and devoted father and he was a great advocate for adoption," Cohen continued. "He leaves behind a 20-year-old son, Nathen. We will miss you, Willie Garson. Rest in peace."
Glee star Kevin McHale shared a touching tribute as well, posting two photos of himself and Garson from different events, and remembering the actor's kind presence.
"Willie Willie Willie. I’m absolutely heartbroken you’re gone. Your presence filled every room you were in. Your generosity with your time and your heart for me and my friends and family was always appreciated more than you could’ve known (or maybe you did)," McHale wrote. "Watching how you loved Nathen was otherworldly. Thank you for allowing us into your life and for being one of the only people I trusted enough to see during the pandemic, even if over a tennis net."
Garson's friend and fellow actor Titus Welliver took to Twitter to post a heartfelt tribute as well, alongside a smiling photo of Garson.
"There are no words. I love you dear brother," the Bosch star wrote. "We are fewer."
No. No. No. Terrific actor. The sweetest man. A great dad. I had a long talk with him before he went back to shoot SITC. He was so excited about what was to come. And so proud of what his son Nathen had become. No. No. No. Love to you Nathen and all who loved sweet Willie.... https://t.co/SoB709Mos6
I want to share how funny and marvelous Willie was and how sad I am to hear this news. My deepest condolences to his family and amazing friends. Big kiss to you, Willie Garson. https://t.co/OMvloKx5ch via @TVLine
So sad to hear of the passing of actor Willie Garson at the age of 57, confirmed by @Variety. A cause of death has not been disclosed. Garson was best known for his roles as Stanford on “Sex and the City” and as Mozzie on “White Collar.” May he R.I.P. pic.twitter.com/wTcjsJNFHM