[jjotto]

Biological parents, Bennie Peters and Anne-Marie Steenkamp.

[gcparent]

You got that photo off internet where it is mislabeled. That is her stepdad and mother. There is another photo of all 5 of them. The man on the end is holding her mom. That would not happen when the parents are divorced. Her dad whom she looks just like including chin is posted above.

[drpix]

The reason for the difference:

"Miss South Africa 2017, Demi-Leigh Nel-Peters, celebrates with her mother, Anne-
Mari Steenkamp, stepfather Johan Steenkamp, father Bennie Peters and ..."