Alison Arngrim, who played the original villain Nellie Oleson in 'Little House on the Prairie,' is set to make a surprise cameo in Netflix's reboot. She also shared advice for the new actress taking on the role of Nellie.

The Netflix remake of 'Little House on the Prairie' has cast Willa Dunn as the iconic Season 2 villain, Nellie Oleson. This casting news comes ahead of the series premiere, with Dunn joining the show for its second season.

Alison Arngrim, known for her role as the "mean" Nellie Oleson in "Little House on the Prairie," is reportedly unrecognizable 40 years after the show, having played the character for over 100 episodes.