I wish some of you would stop using the old "if you live in this country, you should live by our rules" crap.
There is, thankfully, no law against what they're wearing, so they ARE living by our rules.
The 'bans' on hoodies, and white trainers in nightclubs etc are as a rule in private businesses/ shopping centres and such, and in the case of the former, are there because of people using them to get away with crime.
Forgive me, but I dont see a huge wave of shoplifting and bag theft being commited by Muslim women (or terrorism, for that matter)
So, yes, you are being prejudiced.