Perhaps the best evidence that celebrities are also mere mortals comes at Halloween, when, just like the rest of us, they also dress up as celebrities. In 2013, Miley Cyrus—then in the midst of her “Wrecking Ball” phase, during which she twerked on stage at the MTV Video Music Awards—was a popular Halloween costume both among your neighbors and Paris Hilton and Harry Styles. (Four years on, Cyrus is still grappling with this; she told James Corden recently that it contributed to her becoming the activist she is today. “I realized if that many people were going to talk about something that I did or something that I do, than I should make it a good thing,” she said. “I should make it something that could change someone’s lives rather than be a controversial conversation that does nothing [more] than become a fun Halloween costume for people.”) Marilyn Monroe is a foolproof getup, as evidenced by Miranda Kerr and Martha Stewart. And among the fashion crowd, such trademark icons as Anna Wintour, Grace Coddington, and Rihanna are all reliable looks. However, it was Kim Kardashian who elevated the celebrity costume to an art form when she dressed up as herself at the 2013 Metropolitan Museum of Art Costume Institute Gala for Halloween 2015—a move that evidently inspired Kylie Jenner to dress her daughter Stormi Webster in her own Met Gala get-up from earlier this year. As for Jenner herself? For the second year running, she went as Christina Aguilera. Of course, that was just one of her costumes this October. Keep track with a look back at the 28 best celebrity-dressed-as-celebrity Halloween costumes, as seen on Instagram, here.