TikTok stars could be the next cash cow for fast-food chains … Charli D’Amelia is doing for Dunkin’ Donuts what Travis Scott is doing for McDonald’s.

Charli, TikTok’s most-followed star, has a new partnership with Dunkin’ and we’ve learned it’s already doing wonders for the company’s bottom line … much like the Travis Scott meal at Mickey D’s.

Dunkin’ started selling “The Charli” — a cold brew with whole milk and three pumps of caramel swirl — Sept. 2 and immediately saw a huge boost in sales and interest … Drayton Martin, vice president of brand stewardship at Dunkin’ Donuts, tells 360APROKO.

We’re told Dunkin set a record for daily users on its app the day “The Charli” launched, thanks to a 57% increase in app downloads, and within 5 days the coffee giant sold hundreds of thousands of Charli’s signature drink. That’s a lotta caffeinated kids on their phones.

Sounds like Charli made cold brews even cooler … Dunkin’ says they saw a 20% sales boost for all cold brews the day her drink debuted, and a 45% surge the next day.

Dunkin’s chalking it up to the excitement the drink stirred up among Charli’s massive social media following — 88.3 million followers and over 6.7 billion likes on her TikTok videos. Call it the TikTok effect.

The numbers are in … and it looks like companies are figuring out how to use celeb’s massive followings as advertising tools.