New Delhi, June 13 -- and the couple is reportedly already disappointed that some of those details have leaked anyway.

Swift personally called guests last month to invite them. Those who confirmed their attendance were then sent an electronic link to sign the NDA, which prohibits sharing any wedding specifics and carries consequences for violations, TMZ reported on June 12.

A Guest List Built for Scale

Between 1,100 and 1,200 guests are expected at the ceremony. Swift has said she wanted the celebration broad enough to invite "anyone I've ever talked to," specifically to avoid the difficult calculus of a smaller, curated list. Confirmed attendees include singer Benson Boone and model Karlie Kloss. Actor Miles Teller and his wife Keleig...