M.M.
Beata...i understand your frustration and being copied all the time but mabe she is not as up to date as you are and has no concept of how things should go together....maybe she has had problems in the past with people making fun of her because of how she did something or what she wore!!! you never know, i think you spending alittle it more time with her to make her feel comfortable shopping online or in shops, malls or other places and helping her become herself then you probably will not have to worry about a copycat! she is not fashionable
maybe you can call what not to wear and let them help her lol
but seriously yea she needs to find herself and with people naggin at her for coping you with not solve nothing but you can help her!
Please let us know what happens!
i hope all goes well once yout alk to her about shopping and joining her while she is looking for something ......take care
~M.