Every Halloween, the online world transforms into a frantic fashion showcase, orchestrated by stars proficient in social media. Instagram acts as the red carpet, TikTok becomes the after-party, and the dress code is straightforward: “anything that will disrupt the algorithm.”
This year’s celebrations were no exception. Celebrities traded high fashion for cosplay, turning Halloween into a meticulously crafted content reveal. KATSEYE members embodied various Mariah Carey eras in a chic red-carpet parody featuring Bowen Yang. Demi Lovato embraced her meme status by resurrecting her notorious alter ego, Poot Lovato. Kim Kardashian presented herself as a TikTok influencer, underscoring the impact of social media personalities.
What’s striking now is how few of these outfits ever make it beyond the set.
Halloween has shifted from being merely a festivity to resembling a photo shoot, a chance to unveil cinematic edits, editorial-quality images, and polished carousels that attract millions of likes.
Whether imitating pop culture legends or bringing back viral memes, celebrities aren’t just dressing up for an evening; they’re orchestrating a takeover of social media feeds.
Here are the trending celebrity costumes that ruled Halloween 2025.