Popsugar Entertainment Halloween 29 Best Brother Costume Ideas For Halloween 2023 29 Pop Culture Halloween Costumes Perfect For Brothers September 27, 2023 by Maggie Panos View On One Page Photo 7 of 29 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 7 Greg, Peter, and Bobby Brady From "The Brady Bunch" What to wear: Go full-on '70s with striped shirts for the two younger boys, a button-up for Greg, and flared pants for all three. How to act: Like you're sick of your parents trying to make you get along with all those pesky girls. Previous Next Start Slideshow HalloweenHalloween CostumesGroup Halloween CostumesPop Culture Halloween CostumesTVMoviesHalloween Costumes For Men