It takes some bravery to do this at first. It is easier when you are in a store presenting as a woman and it is something that just takes doing it. Shopping with another woman at first can ease the discomfort level. Then later on, shopping with another woman is just a nice and fun thing to do. You can also get some advice on what truly looks good on you, if you allow her to not hold her comments back on giving constructive advice.
Congratulations on your shopping outing and trying things on.
You will also find that buying and returning items in person is something to get used to.
Being able to try things in the store tends to reduces purchases as well as returns.
Chrissy