Celebrities and fans went on Twitter in an outpouring of grief on Wednesday after Debbie Reynolds died one day after the death of Carrie Fisher, her daughter and fellow actress.

[ Read Debbie Reynolds’s obituary | Watch her in her greatest roles ]

Ms. Reynolds, 84, was rushed to an emergency room on Wednesday amid reports that she had possibly had a stroke. Ms. Fisher, 60, who gained worldwide fame for her role as Princess Leia in the “Star Wars” movie franchise, died on Tuesday after having a heart attack on a flight on Friday.

Celebrities expressed their disbelief after the second death.