How long does it normally take to tailor a dress?

How long does it normally take a tailor to make a dress? I'm not in a rush but I'd like to know about how long it will take so I don't have to panic later. The design is mine so they would be starting from scratch....no altering just another dress. The dress is satin material, full length with a... show more How long does it normally take a tailor to make a dress? I'm not in a rush but I'd like to know about how long it will take so I don't have to panic later. The design is mine so they would be starting from scratch....no altering just another dress. The dress is satin material, full length with a split starting around three inches above the knee but the top is almost corset style. I'm still trying to figure out what to do with the sleeves (if I don't decide to have a strapless) so if you have any suggestions on that it would be appreiciated. I need the dress in April so the weather shouldn't be a factor.
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