Should I cleaned or altered a vintage wedding dress first?

Should I cleaned or altered a vintage wedding dress first?

I have a beautiful vintage wedding gown for my upcoming wedding. Although the dress is in good condition it will need to be cleaned and altered. Which should I do first? I worry about fingerprints and the like if I clean it before alterations. I worry about dirty hems being sewn into the gown if it do the alterations first. Have any of you dealt with this. Do the tailor’s ware gloves and I dont need to worry?

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