We're getting closer to October 31, which means we can expect batches of Halloween costumes to be uploaded to Instagram by the day. This weekend, celebrities have been out in force in their Halloween finery, and we have rounded-up all of the best costumes below. There is no doubt that 2019 has been Billie Eilish's year, and no less than three celebrities have already dressed up as the goth-pop singer. For the Casamigos Halloween party, Nina Dobrev dressed as the <em>Bad Guy</em> singer, and Jameela Jamil followed suit as 'Silly Eilish' to DJ at Spotify's spooky party, while singer Anne-Marie had the same idea for the Kiss Haunted concert in London. Eilish has responded to everyone dressing as her for Halloween this year, saying Anne-Marie's costume in particular had her ‘tripping’. <strong>See more celebrity costumes below...</strong> The British actress channeled Uma Thurman and transformed into <em>Kill Bill</em>'s The Bride. For the Kiss Haunted show at the The SSE Arena in London, the former One Direction star became Superman for the night. "Let them eat trick or treat sweets," we imagine Demi Lovato said as she dressed as Marie Antoinette for Halloween. Dressing as other famous faces seems to be <em>the</em> thing to do this Halloween, as singer Halsey became Marilyn Manson for the night. In a funny switch, Jessica Biel dressed as husband Justin Timberlake back in his N*Sync days, while the singer came dressed as a microphone. "This is what happens when you admit on TV that you don’t know any N*Sync songs and you’re married to [Justin Timberlake]," Biel wrote on Instagram. "Well played, husband, well played." Another star to channel a famous face, <em>The Real Housewives of Beverly Hills </em>star, Lisa Rinna dressed as <a href="https://www.thenational.ae/lifestyle/fashion/google-images-exists-because-of-that-green-jennifer-lopez-dress-from-2000-1.852645">Jennifer Lopez in the Versace </a>dress that arguably sprung Lopez to fame in 2000. With TV producer pal Jonathan Voluck as Elton John, the English actress dressed as Audrey Hepburn's famous Breakfast at Tiffany's character, Holly Golightly. The queen of Halloween has started her high-key spree of costumes as a firework, along with husband Tom Kaulitz, covered head to toe in glitter. For the <em>Celebrity Juice </em>Halloween special, the TV presenter dressed as Harley Quinn. <strong>_________________</strong> <strong>Read more:</strong> <strong><a href="https://www.thenational.ae/arts-culture/film/long-live-the-queen-of-slasher-flick-the-25th-anniversary-of-john-carpenter-s-halloween-1.928191">Long live the queen of slasher flick: the 25th anniversary of John Carpenter’s 'Halloween'</a> </strong> <strong><a href="https://www.thenational.ae/lifestyle/family/18-of-the-cutest-photos-of-dogs-in-new-york-city-dressed-up-for-halloween-1.928117">18 of the cutest photos of dogs in New York City dressed up for Halloween</a> </strong> <strong><a href="https://www.thenational.ae/arts-culture/film/best-halloween-costumes-at-manila-s-black-magic-ball-from-kathryn-bernardo-to-maymay-entrata-1.926310">Best Halloween costumes at Manila's Black Magic Ball: from Kathryn Bernardo to MayMay Entrata</a></strong> <strong>_________________</strong>