Jennifer Aniston took to Instagram to honor her parents on her 54th birthday. She shared a throwback photo featuring her late parents and expressed gratitude for the love she received on her special day. Aniston's father, John Aniston, passed away in 2022 at the age of 89, while her mother, Nancy Dow, died in 2016 at the age of 79. Celebrities like Naomi Campbell and Reese Witherspoon wished her a happy birthday in the comments. Witherspoon, Aniston's co-star on The Morning Show, also shared a heartfelt message for her "big sis" on Instagram.