Am I wrong for re-wearing my wedding dress?

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I'm 28f, and I'm getting married again. My last wedding was about 4 years ago. The dress still fits me well, and is so pretty. My mom is not happy that I'm wanting to re-wear it, but I don't feel the need to spend the additional money. Am I wrong for re-wearing it?
Am I wrong for re-wearing my wedding dress?
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