Brits and Americans have hundreds of different phrases for the same thing. Luckily it's usually a source of amusement rather than frustration. A flashlight by any other name is still a torch. My personal favourite is 'fairy lights ' which we boringly refer to as 'Christmas lights.'
I've always looked the same. Since I was a child I hated having to deal with my hair. I hated having to change my clothes. As a kid I had a sailor shirt and the same old corduroy pants and that's what I wanted to wear everyday.