October is officially over, which means it’s the end of this year’s outrageous and silly Halloween costumes. While last year’s big one was Tiger King, Netflix’s 2021 monster hit (see what we did there?) Squid Game was the show inspiring outfits seen on around half the people this year. But which celebs truly nailed their Halloween looks? We rounded up 14 of our favourites. 5 times Melania Trump proved she’s too rich to be first lady Hailey Bieber as Britney Spears Her husband may be pop prince Justin Bieber , but Hailey Bieber was the ultimate pop princess this year as Britney Spears. The model posted a variety of Britney Spears’ most iconic looks from the early days of her career. Lizzo as the Red Light, Green Light doll from Squid Game We’re not going to lie – all the Squid Game costumes this year became a bit monotonous and predictable. But when Lizzo stepped out and performed as the Red Light, Green Light doll from the gory Korean series, we were sold. View this post on Instagram A post shared by Lizzo (@lizzobeeating) Blackpink’s Lisa, also as the Red Light, Green Light doll Our second (and last) Squid Game seal of approval of 2021 goes to Blackpink singer Lisa, who looked the most gorgeous and glamorous Red Light, Green Light doll the fashion world could ask for. Kaavia James, Dwyane Wade and Gabrielle Union’s daughter, as Adele Basketball legend Dwyane Wade and actress Gabrielle Union gave us all the feels when they dressed their two-year-old daughter Kaavia James Union Wade as Adele. They even recruited a pal to recreate Adele’s internet-breaking photo with her boyfriend, Rich Paul. Paul himself even got emotional and commented with crying emojis. Aw! Katy Perry and Orlando Bloom as … the Covid-19 vaccine ? Katy Perry never fails to deliver a LOL-worthy outfit, and 2021 was no different. The singer and her fiancé Orlando Bloom chose to spread awareness by dressing as a syringe and a doctor for a Halloween party. 5 things to know about Salma Hayek’s daughter, Valentina Paloma Pinault Bebe Rexha as Anna Nicole Smith The late Anna Nicole Smith, a former Playboy bunny who married 89-year-old billionaire J. Howard Marshall, was an iconic figure in pop culture history. Singer Bebe Rexha recreated her famous wedding photo to a T. Kourtney Kardashian and Travis Barker as the True Romance couple They’re the celebrity couple of 2021, so it was only right that Kourtney Kardashian and Travis Barker did a “couples look” this Halloween. The pair recreated the movie poster for cult classic film True Romance featuring Christian Slater and Patricia Arquette. Kendall Jenner as Martian Girl The 25-year-old model transformed herself into 1996 movie character Martian Girl from the Mars Attacks films. Saweetie as Catwoman Rap’s “it” girl Saweetie dressed up in a head-to-toe sexy Catwoman costume and released an epic short film featuring the movie’s actual star, Halle Berry. Berry even gave it a final seal of approval, commenting, “You bodied this!” View this post on Instagram A post shared by icy bae (@saweetie) Courteney Cox as Gale Weathers Courteney Cox always surprises us with amazing content on social media, but reprising her iconic role as reporter Gale Weathers from Scream really made us LOL. When you’ve already played characters that iconic, why not, eh? Ariana Grande as the Creature from the Black Lagoon Ariana Grande pulled out all the stops when she portrayed the monster from the 1954 horror film Creature from the Black Lagoon . Shiloh Jolie-Pitt’s red carpet makeover: from tomboy chic to Angelina’s mini-me Sophia Grace and Rosie McClelland as … themselves Remember singing toddlers Rosie McClelland and Sophia Grace? They became famous when their cover of Nicki Minaj’s Super Bass on The Ellen Show went viral on YouTube in 2011. A decade later, the duo reunited and dressed up as themselves for Halloween – and we officially feel old. Inside Priyanka Chopra’s glam yet cosy London home Harry Styles as Dorothy Harry Styles dressed up as Dorothy for his Wizard of Oz -themed “Harryween” concert, and we’re here for his look. Trevor Noah as The Weeknd/The Weekday The Daily Show host Trevor Noah pulled off a simple but highly accurate look as The Weeknd, captioning his photo of it “The Weekday”. Want more stories like this? Sign up here. Follow STYLE on Facebook , Instagram , YouTube and Twitter .