How do I stop feeling tied to my twin sister?

We are non identical but look about 93% similar I’d say. She completely neglects her appearance, doesn’t pluck her upper lip for example. She also isn’t overweight but she doesn’t exercise so it’s inevitable. I wouldn’t care if she didn’t look like me, but I strongly value exercise and doing the basics with my appearance. She completely neglects her. I just feel people from my past will see her and think I let myself go big time. How do I stop this anxiety?

How do I stop feeling tied to my twin sister?
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