Popsugar Entertainment Halloween Pop Culture Costume Ideas For 2017 The Best Pop Culture Halloween Costumes For 2017 October 31, 2017 by Shannon Vestal Robson View On One Page Photo 23 of 46 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 23 Baby Groot From Guardians of the Galaxy 2 What to wear: A tree costume with big baby eyes. How to act: Say "I am Groot" in a tiny baby voice and do some really adorable dances. Previous Next Start Slideshow HalloweenHalloween CostumesPop Culture Halloween CostumesTVMovies