Billie Eilish and Jesse Rutherford.
Photo-Illustration: Vulture; Photos by Christopher Polk/WWD via Getty Images and Amy Sussman/Getty Images

Celebrity couples costumes are a thriving Halloween institution. A particularly good one is sure to generate press and impress the public, who can’t help but love when a famous pair telegraphs their partnership through a carefully orchestrated costume. This year, celebrity couples took their hoarded cash and put it toward elaborate ensembles that range from the conventional to the ???. The costumes that stand out fall on the latter end of the spectrum: Billie Eilish and boyfriend Jesse Rutherford, the lead vocalist of the Neighborhood, dressed up as a baby and old man in what appears to be a nod to their much-discussed age gap (Eilish turns 21 in December, while Rutherford is 31). Hmm … it’s getting weird. Meanwhile, Megan Fox and Machine Gun Kelly remain committed to chronically oversharing the details about their relationship — the video of MGK as a priest and Megan Fox on her knees in bondage felt a little too close to reality for our liking. (They went to a party as Pamela Anderson and Tommy Lee this year too). See for yourself below, along with more celebrity couples costumes.

This post has been updated throughout. 

Billie Eilish and Her BF Troll Halloween As Baby and Old Man