Popsugar Entertainment Halloween Mary-Kate and Ashley Olsen Halloween Costumes 14 Mary-Kate and Ashley Costume Ideas That Are Double the Trouble For Halloween October 28, 2017 by Kelsie Gibson View On One Page Photo 14 of 15 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 14 Michelle Tanner, Full House What to wear: Flower power is your new motto. Pair a cute floral dress with a matching scrunchy and you're good to go. How to act: Cute and darn proud of it. Bat your puppy-dog eyes when things don't go your way and make everyone melt with your iconic one-liners. Related: 8 Full House Halloween Costumes Guaranteed to Make You Super Nostalgic Previous Next Start Slideshow HalloweenAshley OlsenMary-Kate OlsenNostalgiaHalloween CostumesPop Culture Halloween CostumesMoviesHalloween Costumes For Women