'Losing him is a gutpunch': Tributes from Hollywood pour in for Bill Paxton

"Sons of Anarchy" and "Hellboy" actor Ron Pearlman shared this photo of himself sharing a laugh with Bill Paxton on Twitter Sunday morning.

Actor Bill Paxton, best know for his roles in "Titantic" and "Twister," died on Saturday due to complications following surgery. He was 61. 

As the news broke Sunday morning, shocked movie stars and friends took to Twitter to offer their condolences and pay tribute to the long-time actor. 

Rob Lowe, who was a close friend of Paxton:

Academy Award-winner Tom Hanks, who co-starred with Paxton in "Apollo 13": 

“Sons of Anarchy” and “Hellboy” actor Ron Perlman:

"Apollo 13" director Ron Howard:

Jordan Peele, co-star of "Key and Peele" and director of the new horror film "Get Out:" 

"Mad About You" star Paul Reiser, who co-starred with Paxton in "Aliens:"

CNN host Jake Tapper:

Actor and comedian Josh Gad:

Peter Mayhew, who played Chewbacca in “Star Wars:”

“Star Trek” actor William Shatner: