15. Katy Perry
Several days before Katy Perry’s 2017 Halloween party/concert in Toronto, she posted the following challenge on her Instagram account: IF YOU WEAR YOUR KATY HALLOWEEN COSTUME ‘A’ GAME TO THE SHOW ON TUESDAY, HALLOWEEN NIGHT, THEN I WILL SELECT 10 PEOPLE (AND THEIR +1’S) FROM THE AUDIENCE (with a little help from some pals for seats I can’t reach) FOR AN AFTER-SHOW HANG, SELFIES INCLUDED!
Toronto fans descended in droves, dressed in full Halloween garb, as Perry wowed the crowd with his performance. There’s a third eye visible in this shot, and she’s wearing a slightly finer costume than the dancing squad of television heads in the background.