You guys are coping.
When she was underage she was skinny and had huge boobs and posted them in her Instagram until she hit it big. Then she started dressing in moo moos and saying all that "don't sexualize me".
She started getting chubby during the pandemic when she had green hair, which was after she turned 18 and started showing off to try to generate publicity for her second album because she was a one hit wonder with "Bad guy."
In other words, it wasn't when/ because she was chubby that she stopped showing off.
She showed off the most last year when she had blonde hair and did Vogue and the titty pillow fight video.
Now she's lost weight and lost her boobs, probably doing nose candy with her old man boyfriend, and she's back to wearing baggy shirts and showing less.