Donna "D.J." Tanner is a fictional character from the television series Full House and its sequel Fuller House. She is portrayed by actress Candace Cameron Bure. D.J. is the eldest daughter of Danny Tanner, a widowed father raising his three daughters with the help of his brother-in-law Jesse Katsopolis and best friend Joey Gladstone. Throughout the series, D.J. is depicted as a responsible and caring older sister. She navigates the challenges of adolescence, including friendships, school, and family dynamics. As an adult in Fuller House, she becomes a single mother, continuing to showcase her strong family values and dedication to her children.