You can borrow a style. You can’t borrow a spine.

Copying the surface is normal. Clothes, phrasing, the way somebody carries themselves: everyone assembles from what is around them, and that is how taste gets built. What cannot be copied is the part that decides when there is a cost attached, because that gets made one hard choice at a time. Plenty of people look exactly like someone with a backbone.

Notice who you are imitating, without judging it. Then ask which of your positions you would keep if that person dropped it tomorrow. Whatever survives is yours, and whatever does not is still a costume, which is fine as long as you know.