Well it's like her saying she's a size 10 when at time she looked a 14, instead of fabricating your size and it opening up a discussion DON'T SAY ANYTHING AT ALL, just say you bought a coat, no need to say what size, at time she bought a size 10 coat but broke the zip in carpark, instead just buy a coat that fits and does up nicely with jumpers in winter, most buy bigger size winter coats. Does she not know everyone comes in different shapes sizes, and no person who weighs same are same shape size or anything. Sarah you maybe a petite in height family but there's other families smaller, who cares, as long as your healthy and happy but stop emphasising how small your children are they are normal for them. Small isn't cuter, or to be trophied. I'd be more concerned what the mental development of having a camera in their faces from morning to night, everything out there that's personal to them that's what is important not size, height etc.