TikTok

Charli D'Amelio's crying a river after tons of followers canceled her ... and now she's wondering if she should just quit TikTok after encountering her first major PR hurdle.

Here's the deal ... Charli, TikTok’s most-followed star, is losing followers at a rapid rate after posting a family dinner video that rubbed lots of folks the wrong way. In part of the video, she complained to YouTube star James Charles about only having 95 MILLION followers, and not 100.

Fans felt the comment was anything but humble, and now followers are jumping ship by the boatload -- as in more than 1 million people have left Charli's page -- leaving her in tears.

Fans are also pissed that Charli and her sister, Dixie, scoffed during their family's meal -- prepared by a private chef -- more spoiled brat behavior.

During her tear-filled post, Charli wondered out loud if she should stay on an app where there's so much hate. At least one person's got her back though, Aaron May, the chef, says things are getting blown out of proportion -- but the damage is clearly done with Charli.

TikTok stars could be the next cash cow for fast-food chains ... Charli D'Amelio is doing for Dunkin' 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', tells TMZ.

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.

Boxing superstar Ryan Garcia just caught the first L of his career ... and it wasn't at the hands of Tank Davis or Luke Campbell -- he got beat up by some TikTok stars!!!

Okay ... so, that's not true at all. BUT, the 22-year-old phenom *did* hit the gym with the uber-popular social media stars Dixie D'Amelio and Addison Rae on Wednesday ... and they all took part in the "Body Shot Challenge!!"

Of course, we've seen Garcia's viral trend in the past with guys like Logan and Jake Paul ... where they put on a body pad and take hits from the 20-0 fighter.

Only this time, Ryan put on the pads and let Dixie and Addison fire off some punches for a solid 6 seconds before begging for mercy!!

And, the Oscar goes to ...

Hey, we get it!! The video wouldn't be nearly as fun if Ryan didn't ham it up for the camera.

Fun fact: the trio has a combined 51.2 million followers on Instagram ... and 97.9 MILLION followers on TikTok.

Ya can't deny Dixie and Addison's skills, though -- both ladies can land a serious punch!!

Things have gotten way too personal for TikTok's most-followed personality, and after getting an online threat ... her family's hired round-the-clock security.

Law enforcement sources tell TMZ ... Charli D'Amelio got a scare on July 8 when someone posted on social media, claiming they were going to show up at her house.

No one followed through on that threat, apparently, but we're told cops are investigating. The situation alarmed Charli and her fam enough to hire cops to keep an eye on things.

Our sources say the family is paying the OT to have police officers surveil their property for the foreseeable future, because this isn't the first frightening incident they've experienced.

We're told Charli's also been the victim of multiple "swatting" calls, where random people have falsely reported an emergency at her home ... then authorities show up to nothing.