Halloween

Adele dressed up as Jim Carrey's titular character from the 1994 movie 'The Mask' -- and it's equal parts hilarious and terrifying.

“Thanks [Ryan Reynolds] for this costume. You’re the BEST 'Deadpool' inside contact ever."

From Questlove to Gabrielle Union, celebrities rocked their Halloween best at Heidi Klum's Annual Halloween Party in 2016.

The actor's young daughter couldn't get enough of her dad as a Pokemon.

Jesse Wellens made quite a name for himself across the cosmos...and New York City.

Beyonce and Blue Ivy dressed up as '90s hip hop icons Salt-N-Pepa, as well as Barbie dolls, for Halloween 2016.

Lena Dunham skewered Donald Trump's recorded 2005 remarks to Billy Bush with her Halloween 2016 costume.

Klum's previously gone as Jessica Rabbit and an old woman, but in 2016, the supermodel went for numbers.

Bette Midler dressed as Winifred Sanderson for an appearance at the New York Restoration Project’s annual Hulaween fundraiser.

From Kylie Jenner to Beyonce and beyond, which celebrity had the best 2016 Halloween costume?