According to a tribute from the Global Down Syndrome Foundation posted Saturday, Dixon died on Oct. 19 at the age of 36. She was a global ambassador for the organization and the first recipient of the foundation's highest honor, the Quincy Jones Exceptional Advocacy Award.
Foxx, 52, took to Instagram on Monday to share the news of his sister's death, writing that his heart is "shattered into a million pieces."
"My beautiful loving sister Deondra has transitioned," he wrote, captioning an album of photos of Dixon through the years. "I say transitioned because she will always be alive..."
Foxx described his sister as a "bright light" who always livened up the dance floor. She even made an appearance dancing in Foxx's 2009 music video for "Blame It," featuring T-Pain.
"I know she is in heaven now dancing with her wings on," he continued. "tho my pain is unbelievable I smile when I think of all of the great memories that she left me... my family... and her friends… from sliding down my stairs with a grin as wide as the rio grand... to serenading us with all of her music... Deondra you have left A hole in my heart... but I will fill it with all of the memories that you gave me..."
He capped off his post asking his followers to please keep his family in their prayers.
"I love you with every ounce of me," he wrote. "our family is shattered but we will put the pieces back together with your love"
My heart is shattered into a million pieces... my beautiful loving sister Deondra has transitioned... I say transitioned because she will always be alive... anyone who knew my sis... knew that she was a bright light... I can’t tell you how many times we have had parties at the house where she has got on the dance floor and stolen the show... even gave her boyfriend @chrisbrownofficial a run for his money... well I know she is in heaven now dancing with her wings on...tho my pain is unbelievable I smile when I think of all of the great memories that she left me... my family... and her friends… from dancing in the blame it video… to Dancing on the Grammys… And becoming The ambassador to @globaldownsyndrome... from sliding down my stairs with a grin as wide as the rio grand... to serenading us with all of her music... Deondra you have left A hole in my heart... but I will fill it with all of the memories that you gave me ... I love you with every ounce of me... our family is shattered but we will put the pieces back together with your love... and y’all please keep my family in your prayers... 💔💔💔
A post shared by Jamie Foxx (@iamjamiefoxx) on Oct 26, 2020 at 1:55pm PDT
On Saturday, the Global Down Syndrome Foundation posted a tribute to Dixon, describing her as a "talented, intelligent, feisty, beautiful, kind, loving, caring, pure and giving heart."
"Our Down syndrome community has lost a beacon of hope, a true leader, and role model whose aim was to always help others," the tribute continued. "She was a bright light in this world of ours."
The organization also commended Dixon's family for accepting her and called on people to respect their privacy during this time.
"DeOndra was brought into this world in a loving family who treated her like any other family member," the tribute read. "They gave her the gifts of complete acceptance, confidence, and knowledge. They empowered her to graduate with a regular diploma from high school and to take life by storm, which, if you knew DeOndra, she absolutely did."
This article originally appeared on USA TODAY: Jamie Foxx's sister DeOndra Dixon dies at 36: 'My heart is shattered'