Is it normal sister takes cosplay too far?
So i have a sister who loves to cosplay. she dresses up and acts like anime girls who happen to be blonde and large chested (since she herself happens to be blonde and large chested as well). Some of the characters she likes to cosplay as include Tiffania from Zero no Tsukaima, Lucy from Fairy Tail, Rushuna from Grenadier, Kashiwazaki Sena from Haganai, etc. I dont mind that she has a hobby at all, but the problem is that since she acts like these different characters, she begins to treat me like the main character from these animes and not at all as a brother. It's gotten a bit weird for me, she gets way too close, like one of the characters loves baths so she wants to bathe with me, or she'll hug a man's face to her chest in the anime and so my sister tries to do that with me. Every time i try to talk to her, she'll say that she's not my sister and that she's the character she's cosplaying as. When she's not cosplaying and i try to talk to her, she says she was just cosplaying and that it was no big deal. Any advice would be appreciated on how to handle this, thank you.
Edit: oh right, i meant to ask if this is normal for a cosplayer? does anyone on here do cosplay and really get into their character this much? if so then perhaps i should play along with my sister to immerse her more into her character? tell me what you think all you beautiful cosplayers, and thanks again.