The couple are expected to tie the knot in Paris next month in front of 200 of their loved ones, and last week those lucky enough to be asked to attend were given hand-delivered invites which each cost £600 to produce.
A source told Grazia magazine: "Kim and Kanye wanted the invites to be as lavish as possible and commissioned a couture designer to create gold silk boxes containing a photo album of their fairytale romance and a silk invite etched in real gold leaf with a clasp of natural pearls.
"It's the first glimpse their friends and family have had into their Paris wedding so they wanted them to be special."
The couple - who have nine-month-old daughter North together - are said to have hired the 199-room Trianon Palace Hotel for their guests, who will be flown by private jet to France, to stay in, and no expense will be spared for their comfort.
The source added: "Guests will be greeted with goodie bags containing £300 bottles of Bollinger champagne, £120 Creme de la Mer products, handmade souvenir trinkets with Kim and Kanye's initials etched in Swarovski crystals, bottles of scent from local perfumeries and £150 vouchers for treatments at the hotel spa.
"This is going to be the wedding to end all weddings and Kim wants to ensure that she and Kanye, as well as all their guests, have an experience they will never forget."
As for the bride herself, she is planning to don three wedding gowns on the big day, and is said to be having a spray tan containing real diamonds and 14-carat gold so that she "sparkles".