Sometimes on these threads it feels that some posters just don't like girls wearing dresses and use arguments such as them not being practical etc when not everyone would agree. I like wearing dresses- I find them cooler in summer. I always have liked them - as well as trousers, shorts, skirts. I like that as a woman it's easy to wear very different styles without it ever being seen as odd. It's sad how much fuss there was when Harry Styles wore a dress on the cover of vogue, he looked great.
My DD loves wearing jeans and trousers but she loves her dresses too. As long as girls have the choice to wear what they like and what is comfortable to them, and are allowed to wear shorts and trousers as part of school uniform, that's all that is important IMO. My DC's school has a really sensible uniform policy- they very sensibly don't set out a boys uniform or a girls uniform- there is just the uniform. Trousers, shorts, skirts and pinafore. Gingham summer dress (and I presume the gingham culottes etc if preferred). Plenty of girls choose shorts/trousers. Looking at the way the school set out the policy it reads as though a boy could wear a skirt if he liked but sadly I don't think boys feel comfortable to do this at school on the whole.
I completely agree that the word modesty shouldn't be applied to women and girls clothing. I wouldn't want to be flashing my pants and my daughter doesn't like it either. Getting bigger pants isn't even the issue really- yes they are available and I agree that for a 4 year old that is fine. And of course for my 8 yr old daughter that is also fine! But she has become more conscious and doesn't want to flash them. I respect that. She loves her gingham dresses and it's pretty much the same comfort wise as if she were wearing at shirt with a pair of cotton cycle shorts. She has choice and I like to go with what she chooses.