The 'Star Wars' star died on Tuesday after going into cardiac arrest on a flight last week.
Carrie Fisher's family is "heartbroken" over her death.
The Star Wars star's half-sisters, Joely and Tricia Fisher, took to Twitter on Tuesday to express their grief and remember their sister.
WATCH: Carrie Fisher Dies at 60: Stars React to Actress' Death
"Heartbroken @carrieffisher @MsJoelyFisher," Tricia simply wrote on Twitter, alongside a pic of herself and Carrie.
"Breaking my silence with a broken heart," Joely tweeted soon after. "The Unfathomable loss...the earth is off its axis today...how dare you take her away from us."
RELATED: Inside Carrie Fisher's Final Days in London
Carrie died on Tuesday morning after going into cardiac arrest on a flight from London to Los Angeles on Friday. She was 60 years old.
Joely and Tricia, Carrie's younger sisters from her father, Eddie Fisher's second marriage to actress Connie Stevens, aren't the only members of the actress' family to pay their respects. Carrie's mother, Debbie Reynolds, took to Facebook to thank fans for "embracing the gifts and talents of my beloved and amazing daughter."
"I am grateful for your thoughts and prayers that are now guiding her to her next stop," Reynolds wrote, while Carrie's Star Wars family also paid tribute to the icon.
WATCH: Harrison Ford Remembers Carrie Fisher as 'Funny and Emotionally Fearless'
See more in the video below.