Before posing with Jay Z as iconic Olympic athletes Florence Joyner and Tommie Smith.
While her sister Kylie Jenner channelled her inner Victoria’s Secret Angel — in particular, Candice Swanepoel.
And Kim Kardashian transformed into Pamela Anderson for her traditional couples’ costume with BFF Jonathan Cheban.
Ariel Winter also went as Pamela Anderson, alongside her boyfriend Levi Meaden as Kid Rock.
Harry Styles donned sparkles and sunglasses as Elton John.
Chrissy Teigen and John Legend became literal royalty as Queen Elizabeth and Prince Philip.
While Darren Criss and his fiancée Mia Swier dressed up as Björn Ulvaeus and Agnetha Fältskog, aka one half of ABBA.
Model Devon Windsor and her fiancé Jonathan Barbara were the perfect 2003 Justin and Britney.
Mel B dressed as fellow Spice Girl Victoria Beckham in a bid to get Posh to join the Spice Girls reunion tour.
Gabrielle Union lived all our ’90s dreams and dressed up as a No Doubt-era Gwen Stefani.
And Rita Ora basically won the whole Hallo-week with her Post Malone costume.