If there's one thing that Halloween in Hollywood has taught us, it's that celebrities like to go all out for the holiday. As for their go-to costume inspiration? Naturally, each other. Ahead, we rounded up the best celeb-on-celeb costume ensembles. You're going to want to take notes.
When Beyoncé does something, she goes all in. So why would Halloween be any different? In 2017, the singer dressed up not once but five times as R&B artist Lil' Kim.
The singer shared a shot of herself on Snapchat recreating the late singer's iconic look for Halloween back in in 2017. Is now a good time to start petitioning for Demi to bring back the bangs?
Kim Kardashian and her longtime friend, Jonathan Cheban, celebrated Halloween in 2017 with a joint costume emulating the '70s singers Sonny and Cher.
The model and entrepreneur donned Marilyn Monroe's classic white dress and a red lip from the late starlet's film, The Seven Year Itch.
In 2016, Nina Dobrev (left) shared a snap of her and a friend dressed up as U.S. Olympic swimmers Ryan Lochte and Jimmy Feigen. The actress was taking a shot at the swimming duo and their scandal in Rio de Janeiro that was unfolding at the time.
Fans went crazy when Kylie Jenner replicated Christina Aguilera's outfit from her "Dirrty" music video in 2016.
At just two years old, Blue Ivy was already cooler than us. Back in 2014, the singer dressed herself and her daughter up as members of the famous Jackson family.
Miley Cyrus wore a barely-there costume for Halloween in 2013, when she dressed up as rapper Lil' Kim circa the 1999 MTV Video Music Awards. Apparently, Lil' Kim told MTV News Miley got the seal of approval: "I think she did me well."
In 2013, Paris Hilton recreated Miley Cryus' memorable outfit from the VMAs—foam finger and all.
Not only did Josh Duhamel nail his ensemble for Karl Lagerfeld in 2015, but he also brought along Choupette (Karl's cat) in the form of his then-wife, Fergie. Both of them looked amazing and did the designer proud.
In 2014, Kate Moss (right) decided to dress up as one of her friends. The famous model rocked messy hair, a graphic t-shirt, and a beanie to capture the look of model Cara Delevingne.
The TV personality showed off her detailed costume of the late actress on Instagram in 2016. From the curls to the pout, we'd say she hit the nail on the head.
For Halloween 2016, Kim Kardashian West dressed herself and her two-year-old daughter, North West, as fashion executives Anna Wintour and André Leon Talley.
Neil Patrick Harris and his husband David Burtka won the holiday in 2018 by dressing not only themselves, but also their children, up as iconic stars of yore.
What do you wear for Halloween when you've broken the internet, not once, but multiple times? In this case, it's only reasonable to dress up as yourself. At least, that's what Kim did in 2015. The reality star re-wore her famous 2013 Met Gala dress for an easy, pregnant-friendly costume.
In 2014, Live's then-morning cohosts decided to dress up as the couple of the year, Kim and Kayne. The duo recreated their wedding looks, complete with a flower wall.
The singer completely committed to capturing the look of the late Freddie Mercury when she dressed up as him for Halloween in 2013.
Complete with a pig, Miley Cyrus donned a big blonde wig and slapped on a sequined dress to pay homage to her godmother, Dolly Parton, in 2014.
Victoria Justice rocked the late singer's beehive hair and tatted arms for her Halloween costume in 2015, and it was epic.
Mario Lopez decided to dress himself and his son, Santino, up as Elvis Presley in 2015. We have to say, their hair makes their looks.
Yet another celebrity decided to imitate Marilyn Monroe. This time, it was Miranda Kerr who channeled the icon in 2015 by giving us her best pout.
Comedian Aziz Ansari replicated the singer's hair and added a stylish leather jacket for Halloween in 2015.
The actress opted for Madonna's '80s vibe for her 2013 Halloween costume, and she even went as far as to rock the singer's iconic mole.
Journalist Katie Couric took on one of Marilyn Monroe's most famous ensembles in 2005, dressing up as the 1950s bombshell from her film, Gentlemen Prefer Blondes.
No, this isn't a picture from the "Thriller" music video. In 2017, Heidi Klum went all out and dressed up as Michael Jackson.
The couple decided to ditch their famous personas for the night and channeled famed rockers David Bowie as Ziggy Stardust and Debbie Harry from Blondie for Halloween in 2018.
The model's spot-on costume of drag queen and TV personality RuPaul is honestly a sight to see.
Musical talent Adele dressing up as one of biggest country singers of all time, June Carter, probably takes the cake for the best celebrity-on-celebrity costume.
Heidi Klum gave us a glimpse at what she'll look like in her 90s at her 14th annual Halloween party, when she dressed up as an older version of herself.
In 2018, Harry Styles arrived at the Casamigos Halloween party dressed up as a young Elton John—sparkly sunglasses and all.