How to write the birthday invitation?

Hello, I will celebrate 15' s birthday soon. Here, I sincerely invite you to celebrate this important turning point in my life. Location is ...

Friend: * * You can also write to dear XX classmates:

I will hold a banquet in xx to celebrate my 15 birthday. Please come then.

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Salute.

Invitations should be short and clear. Too many invitations are fancy and informal.

I hope it helps you.