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 36 of 41 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 36 Sister Halloween Costumes: Piper, Phoebe, and Prue Halliwell From "Charmed" What to wear: Jeans and long-sleeved shirts are fine for these modern witches. Carry around a big book of spells, if you must. How to act: Like you're learning how to master magic. If you have a fourth, she can be Paige! Related: 25 Horror Movie Final Girls to Inspire Your Halloween Costume Previous Next Start Slideshow HalloweenHalloween CostumesPop Culture Halloween CostumesTVMovies