Surely though if parents are discussing removing boots/peeing/pooing before their kids are weighed, they know they are right on the cusp of being overweight?
At the moment, over a fifth of 4-5 year olds are overweight or obese and a third of 10-11 year olds are overweight or obese and that's just in England alone.
This seems to indicate that many parents appear to be just not listening because the problem seems to get worse, as kids get older.
Perhaps they're relying on growth spurts that either don't happen, or they don't solve the problem?
OP, only you know what your child looks like without that dress on. If you can't easily see her hip/rib bones or you can see belly fat (especially if it folds when she sits down) then she's overweight.
BMI can be very generous anyway. When my DS was in year 11 I knew damn well his belly was too big and that I needed to help him lose weight, but according to his results, he was in the healthy weight category.
I limited his unhealthy snacks, got him out exercising more and he lost the weight.
He's 16yrs old now and slim, but when I look back on his pics as an 11yr old, I can quite clearly see that his belly was fat, even though his results didn't reflect that fact.