News Billie Lourd Remembers Carrie Fisher's Birthday With Sweet Instagram Post By Jennifer Drysdale 3:30 PM PDT, October 21, 2017 Getty Images Billie Lourd is remembering her mom on what would have been her 61st birthday. The 25-year-old actress took to Instagram on Saturday to pay tribute to Carrie Fisher with a collage of throwback pics -- including one of the pair rocking matching nightgowns. "Happy Birthday Mom," she wrote in emoji lettering. View this post on InstagramA post shared by Billie Lourd (@praisethelourd) Fisher died on Dec. 27 at 60 years old, after going into cardiac arrest on a flight from London to Los Angeles. Fisher's mother, Debbie Reynolds, died just one day later. RELATED: Billie Lourd Opens Up About Life Without Carrie Fisher, Being Raised Amid Drug Addiction and Mental Illness Lourd wasn't the only one to honor Fisher on Saturday. The actress' Star Wars twin, Mark Hamill, and more of Fisher's celebrity friends shared posts on social media. #AlwaysWithUspic.twitter.com/UJL5LdZw78— Mark Hamill (@HamillHimself) October 21, 2017 View this post on InstagramA post shared by Kevin Smith (@thatkevinsmith)Remembering Carrie on her birthday today. 😢 pic.twitter.com/cOwE3DRmFY — William Shatner (@WilliamShatner) October 21, 2017Always. ❤️ pic.twitter.com/aFJpxrLR9G— Star Wars (@starwars) October 21, 2017 RELATED: Billie Lourd Emotionally Opens Up to Ellen DeGeneres on Losing Mom Carrie Fisher & Grandma Debbie Reynolds See more on Fisher in the video below. Billie Lourd Talks 'Surreal' Life Without Mom Carrie Fisher and Grandmother Debbie Reynolds This video is unavailable because we were unable to load a message from our sponsors. If you are using ad-blocking software, please disable it and reload the page.