Hugh Jackman
"We lost one of the true originals today. Joan Rivers. A force. You will be missed. Love Hugh & Deb. @Deborra_lee."
Taylor Momsen
"They won't ever make another one like her... #RIP Joan Rivers, you will always be amazing, I was blessed to meet you."
Sarah Hyland
"Sad news @Joan_Rivers was one of the hardest working, funniest & sweetest women I've ever met. Twas a pleasure to have known you #JoanRanger."
Goldie Hawn
"May you rest in peace Joan Rivers. Your uniqueness and your gift of laughter will permeate the heavens. You will never be forgotten."
Kat Dennings
"RIP Joan Rivers."
Seth Rogen
"Terrible news about Joan Rivers. I was lucky enough to meet her a few months ago. She was still as comedically relevant as anyone."
Laverne Cox
"So sad over the passing of @Joan_Rivers. U brought me a lifetime of laughter & were amazing to me the few times we met. RIP."
Melissa Joan Hart
"Thoughts &prayers to Melissa&fam!Joan was a fearless woman&larger than life personality.Luvd her since #MuppetsTakeManhattan!RIP Joan Rivers."
Kyle Richards
"So incredibly sad to hear about #JoanRivers One of the greatest comediennes of all time. Thinking of @MelRivers & family."
Evan Rachel Wood
"The day I was ridiculed by Joan Rivers for the way I looked was the day I felt like i made it in hollywood. RIP."
Seth Meyers
"RIP Joan Rivers. A force of nature."
Busy Philipps
"Rest in peace, Joan. You were a real pioneer. Love to @MelRivers and her grandson & all her friends and family."
Tara Reid
"I am absolutely heartbroken and devastated about @Joan_Rivers I loved her! She was my friend and a beautiful amazing person #RIPJoanRivers."
Alec Baldwin
"Very sad to learn about Joan Rivers, a pioneer for women in comedy."
Joy Behar
"Hard to say goodbye to my friend, Joan, a comedian who set the standard for funny. The world is sadder today. Rest in Peace."
Jordin Sparks
"Oh, Joan. Thank you for being so kind to me & making me laugh until tears in those moments I got spend with you. Rest in peace."
Adam Lambert
"Goodbye Joan. You were a bright light till the end. What a beautiful life and grand career you shared…"
Robin Roberts
"So sad that #JoanRivers has passed away. Thinking of her daughter @MelRivers and her family, friends and many fans. #RIPJoanRivers."
Samuel L. Jackson
"Love Her or Hate Her, we're gonna Miss JOAN RIVERS! I always Respected her go for broke humor. One of a kind.R.I.P."
Brandi Glanville
"RIP I was lucky enough to meet Joan Rivers a few times she was hilarious, kind ,smart & really led the wAy for females in comedy #legend."
Ashley Benson
"Joan was such a wonderful woman. Everytime I worked with her she was such a pleasure. One of the…"
Kristin Chenoweth
"RIP Joan Rivers. You made us laugh and happy."
Roseanne Barr
"RIP GODDESS: Hail Hail, a GENIUS has vacated this realm: Joan Rivers has died."
Rose McGowan
"Joan once said I looked like a whore. RIP joanrivers #fashionpolice."