ALEXJR / BACKGRID Billie Eilish is having a rootin’, tootin’ good Halloween! The 21-year-old singer nailed the spooky season with a fun cowgirl costume for this year's celebrations and was ...

At only 19, Billie Eilish is already one of the ... So when Eilish set out to trick-or-treat for Halloween in 2019, she knew she needed a costume that could double as a disguise.

Billie Eilish's relationship with Jesse Rutherford ... posting a fun snap of her Halloween costume with her new beau, where they seemed to poke fun at their 11-year age gap Eilish dressed up ...