Williams’s final Instagram post (above) After news of Robin Williams’s death hit on Monday his many friends and colleagues took to social media to express their shock and grief. Williams himself was active on social media – his final post on Instagram was two weeks ago, wishing his daughter Zelda a happy 25th birthday: “Happy Birthday to Ms. Zelda Rae Williams! Quarter of a century old today but always my baby girl. Happy Birthday @zeldawilliams Love you!” Williams’s Mork & Mindy co-star Pam Dawber shared in a statement, “I am completely and totally devastated. What more can be said?!” “I am sick with grief,” tweeted Monty Python star Eric Idle, who appeared with Williams in big screen fantasy adventure The Adventures of Baron Munchausen in 1988. He brought us so much joy and laughter.” “Very sad, very upset, very glad I did not have to hear about this though Twitter,” wrote Mara Wilson, who played Williams’s daughter in the 1993 hit family comedy Mrs. Doubtfire.