My friend keeps copying me

I have this friend I met 6 months ago or so. We became really close within this time but I’m starting to notice little things she copies me about. I’m talking things such as my style, how I wear my hair, what makeup products I use. Down to things such as changing the specialty she wants to go into (when we first met she wanted to be an OR nurse, once she figured out I wanted to be a NICU nurse she wants to be a NICU nurse), she copied my bitmoji outfit on Snapchat to a T, she copies the foods I eat, what I drink (she said she hated wine but now she drinks wine since she figured out I drink wine), told her I was getting my hair highlighted- she got her hair highlighted, I do fake tan in the winter- she buys fake tan. I got engaged, she asks her boyfriend for a promise ring in the same shape and stone. There are many other things she does but it’s starting to affect me and our friendship because I’m genuinely creeped out. I have other friends but no one has ever copied me like this before and idk how to deal with it. She acknowledged that I wasn’t snap chatting her as much anymore and she asked if it was because she copied my bitmoji outfit, so she’s aware of what she’s doing. I just don’t know how to stop it. I’ve started to distance myself a little bit and stopped telling her things I’m gonna do but she keeps pushing herself onto me. I don’t want to be mean to her and say something rude because she is a nice person. How would you guys go about asking her to stop copying you without sounding rude or narcissistic??