How do I tactfully explain to my s/o that even the parts of her that she finds uglyare actually attractive to me?

This is probably an age old question so I apologise in advance, but how do I tactfully explain to my girlfriend that I actually like her the way she is?

She’s very critical of her physique because she used to be overweight but grew up to have a hourglass figure despite not working out to any major extent. A guy would call her thick, but I understand that can be derogatory to some women. She basically has a bit of fat in all the right places and a big bossom. Her opinion on her butt is actually fairly positive compared to the rest of her body, but she always says “it could be better” every time I compliment her on it. She hates her tummy despite her having a flat stomach and keeps mentioning “fat folds” which is just really her skin wrinkling as she turns her upper body.

My intention isn’t to objectify her. Our relationship is just very physical and I want to show her I appreciate her for her looks as well. Her previous partners didn’t appreciate that about her in the past which I can’t even begin to comprehend.

Is there a way I can approach this more tactfully and most importantly in a manner that will yield better results for her? Should I even push the issue? Even though it’s a sensitive topic for her, she’s never scolded me for doing it in the past or had anything negative to say.