I went to look for some running clothes today on Sainsburys' website for my daughter - in the boys' drop down menu it has 'sports and active' - the girls' equivalent is 'ballet and dance'. Sainsburys response is that they've monitored customer feedback and find this best helps the customer find what they want.
AIBU to think this is so stereotypical and sexist? They do sell some clothing suitable for running but even then a lot of it is described as dance attire even though it's suitable for a lot more than just dancing in.