There's a lot of good tea on glitterandlazers (Anna O'Brian). You can find her (now deleted) blog posts circa 2014 on the way back machine where she was desperately trying to lose weight and she auditioned for the Biggest Loser:
https://web.archive.org/web/20140717105754/http://www.glitterandlazers.com/Blog/
As you mentioned, she slowly gave up on her weight loss goals, (she did actually almost get human sized for a brief moment) before completely giving up and gaining 125-175 lbs on top of the 50lbs or so she lost.
Somewhere around 2015-16 she started transitioning to a "haul" and "bopo" blogger and landed a job working at a Austin based marketing analytics company (the perfect company for a bullshitter) that allowed her to spend inordinate amounts of time and money on clothes and exotic "fat chick destinations" like Jamaica.
The infamous Jamaica video, where she proclaimed that she was "The Kim K of Jamaica" was her best LOLCOW moment to date and led her to "quit forwever" social media (lasted all of one week) and she then made a mea culpa video claiming she witnessed a murder in Jamaica and that is the reason she quit, not the ludicrous video where she demeans black Jamaican men and mistakes their desperation for a green card as genuine interest.
She deleted the original video but here's the "I'm quitting social media" cryface followup:
Since then she's only doubled down on her social media fame thirst, starting to do sponsored hauls and the classic FA "in the dressing room" vids. She got called out for misleading her viewers about sizing and had to issue another apology video.
As mentioned she pretends to excercise, but at her size there's no way she does anything but a slow job for 500 ft and some stretching. Here's a ludicrously sped up video she did for a chub rub company:
The distinguishing feature of most LOLCOWS is of course a complete lack of self awareness and the best moments are when Anna interprets someone making fun of her as a compliment. In her latest video she knocked a table over at a restaurant with her ass and an employee (presumably black from her stereotypical description of said employee) started slow clapping while repeating "that ass" and it went completely over her head that the employee was laughing at her, not with her.
There's a lot of great stuff on her youtube for those interested, the "how I became cruise famous" is a good starting point for how insane an opinion she has of herself: