Popsugar Entertainment Halloween 40 Best Sister Costume Ideas For Halloween 2023 40 Best Sister Costume Ideas For Halloween October 6, 2023 by Maggie Panos First Published: October 1, 2015 View On One Page Photo 30 of 41 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 30 Sister Halloween Costumes: Mary, Laura, and Carrie Ingalls From "Little House on the Prairie" What to wear: The show takes place in the 1870s, so you'll need to go period with some heavy, skin-covering dresses. How to act: Do farm stuff and tell people to keep away from Nellie. Previous Next Start Slideshow HalloweenHalloween CostumesPop Culture Halloween CostumesTVMovies