Popsugar Living Best Of 2021 The Best Halloween Costume Ideas For 2021 We're Calling It Now! Here Are 2021's Buzziest Halloween Costume Ideas 7 August 2021 by Haley Lyndes View On One Page Photo 34 of 38 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 34 Harry Styles and Olivia Wilde What to wear: This duo's 2021 romance was unexpected, but such a pleasant surprise. Transform into the famous couple by re-creating their steamy Italian yacht pictures or dress in something that represents them individually like Harry's outfits from the "Watermelon Sugar" music video or Olivia Wilde in this flashy cut-out Oscars dress. Previous Next Start Slideshow Best Of 2021Halloween Costumes For MenHalloween Costumes For WomenPop Culture Halloween CostumesHalloween CostumesHalloween