Widiarti was born on September 24th, 1979 in Surabaya. Widiarti's father was Soeradi and her mother is Soewarni Ponanti. Her paternal grandparents were Tomo Dimedjo and oma tomo; her maternal grandparents were Ketang and Samu. She has a brother and four sisters, named Giri, Iwin, Emi, Ngesti and Reni. She is the third youngest of the six children.