Celebrities have taken to social media to pay tribute to Carrie Fisher, who died Tuesday at the age of 60.

Hollywood is mourning the loss of Carrie Fisher, the beloved Star Wars actress, author, and screenwriter who died Tuesday at the age of 60.

Mark Hamill, Fisher's long-time costar across multiple Star Wars movies released between 1977 and 2016, tweeted a black-and-white photo of himself next to the actress, revealing he has "no words" and is "devastated" over the loss. He later wrote a longer tribute on Facebook.

"It's never easy to lose such a vital, irreplaceable member of the family, but this is downright heartbreaking. Carrie was one-of-a-kind who belonged to us all — whether she liked it or not," Hamill wrote. "She was OUR Princess, damn it, & the actress who played her blurred into one gorgeous, fiercely independent & ferociously funny, take-charge woman who took our collective breath away. Determined & tough, but with a vulnerability that made you root for her & want her to succeed & be happy. She played such a crucial role in my professional & personal life, & both would have been far emptier without her.

"I am grateful for the laughter, the wisdom, the kindness & even the bratty, self-indulgent crap my beloved space-twin gave me through the years," he added. "Thanks Carrie. I love you, mh."

Fisher's sisters Tricia and Joely both tweeted pictures of them with their late sibling, along with heartbreaking messages. "Breaking my silence with a broken heart…the Unfathomable loss…the earth is off its axis today…how dare you take her away from us," Joely wrote.

Albert Brooks, a close friend of the icon, also lamented Fisher's death on Twitter.

"R.I.P. Carrie Fisher," he wrote. "A brilliantly funny, talented woman. We will miss your humor now more than ever."

William Shatner, another of the two-time Emmy nominee's friends, remembered his playful relationship with Fisher.

"I'm deeply saddened to learn of the death of Carrie Fisher," he tweeted. "I will miss our banterings. A wonderful talent & light has been extinguished."

Other members of Fisher's Star Wars family also paid tribute via their social media accounts, with Billy Dee Williams, who played Lando Calrissian in The Empire Strikes Back and Return of the Jedi, noting "the force is dark today" as a result of Fisher's death.

Anthony Daniels — who portrays the droid C-3PO in the Star Wars films — said Fisher's death marked a painful low point for him over the holidays.

"I thought I had got what I wanted under the tree," he shared on Twitter. "I didn't. In spite of so many thoughts and prayers from so many. I am very, very sad."

Chris Miller and Phil Lord, directors of the upcoming standalone Han Solo movie, tweeted photos of the actress in costume as Princess Leia, with the latter's featuring a quote from the late legend's self-penned 2008 memoir Wishful Drinking: "Sometimes you can only find Heaven by slowly backing away from Hell."

See their messages and more tributes to Fisher below.