Foxx posted a series of photos of him and his sister to go along with the emotional post.
"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...," Foxx wrote. "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."