Is it normal that the way i dress can make me feel extremely insecure?

Whenever I go to school, go out to shop or basically just go out, I tend to worry a lot about the way I dress. For example, if I am trying on something new that day, I will keep on looking out for my own reflection in mirrors or any reflecting surfaces, worried that my shirt or pants might be turned out wrong somewhere, making me look bad. Or when my mum forces me to try on something new that I don't really like, I will try my very best to hide it behind a jacket no matter how hot that day might be(my country is a tropical country) and even then, I will still feel very very insecure as if someone is staring or someone is hating on the way I dress. The feeling will usually go on for the entire day or until I can get it fixed or changed out of the clothes. It also happens with old clothes that I was comfortable about. The only way I feel absolutely safe is wearing a jacket everywhere I go. It is affecting me a lot as I can get really paranoid over the simplest things like my collar turning out weird, my shirt being uneven, my jeans unfolding themselves at the bottom etc. and what started off as an ok day will end up bad. It also prevents me from wearing clothes that I like, thinking that they are too revealing. is it normal and is there any way I can get over this?