Is it ok if I don’t want to do anything my birthday and just celebrate my sister only?

So, I have a twin sister and she’s so kind and I love her a lot! we are turning 17.
Our bday is coming up soon and I’m really glad that we can celebrate it together!

I don’t know if I’m being over dramatic or selfish by not wanting to celebrate me and only wanting to celebrate my sister on her birthday which is what I personally want to do.

I want to do something big for my sister to celebrate her as I love her endlessly!

We are celebrating her and she’s having a party with friends over. But I just want to refer as her birthday because when ever I do refer it to her birthday and not mine, people correct me. I want to make my sisters birthday this year the best and try to make her happy on her birthday. :)

Last question if I may ask, if you were a twin would you celebrate your twin and you? Or just your twin? I want to know what you think!
Thank you in advance for reading.

Is it ok if I don’t want to do anything my birthday and just celebrate my sister only?
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