Where to start with custom?

My husband got his suit custom made, too! We did it at Nordstrom, but if I were you, I'd talk to a tailor and show them your inspo. Then ask them if they'd like you to source the lace/fabric, and get their professional opinion on the fabric for the underlayer (including weft, ply, weight, etc). Depending on how large you are, you'll need between 3-6 yards of each type of fabric. (slightly more if you want a 3-piece look). One word of caution though, lace (even cheaply made/poor fabric quality) is EXTREMELY expensive for the quality you get because it's so labor-intensive to make. I'm thinking that you're probably looking at roughly $500 in fabric (since you won't get a bulk discount) plus whatever the tailor would charge for work.

Good luck!

SIL's suit was custom made by Indochino (they have brick & mortar stores or you can do the whole thing online). I'm not sure if they allow for custom fabric options, but you can email or call to see.