I don't get the big deal with gender neutral clothing, especially if I'm going to have to pay extra for it! If my DD wants to wear a dress, even a frilly unicorn dress, with glitter how does that in any way oppress her? It's attitudes and behaviours that matter
Sadly, people's attitudes and behaviours ARE influenced by clothes. Female clothing has a long history of oppression. Many girls clothes today are restrictive and decorative, leftover from the days when little girls were expected to sit indoors looking demure and pretty.
The odd frilly unicorn dress won't do any harm. But if most of her wardrobe was glittery and decorative I'd be asking myself 'what message is that sending to her? Do they make her feel capable and strong? Are they warm, practical, hardwearing? Do they encourage her to climb trees, splash in mud, roll down hills? Can she safely ride a bike or climb a ladder without the risk of clothing getting caught?'
Girls are bombarded with adverts from a young age, which tell them to value looking pretty. From Disney princesses to pamper parties, play make-up, dolls with ballgown collections, styling heads etc. Even as women, there's huge media focus on women's appearence.
My DD has a few dresses, mainly summer ones as she likes the airiness of them.
I think gender stereotyping is one of the main reasons there are less women in engineering, medicine, law and other high paid professions.