The two are set to tie the knot in Paris in May, but they want everyone who attends the nuptials to promise not to share any details with the media.
The guests have also been asked to hand over their phones prior to the ceremony.
''Guests will have to go through extensive security, even most of Kim and Kanye's celebrity friends,” said a source.
''Mobile devices will be held at a secure location and if someone needs to use theirs during the festivities, accommodations will be made, but a long way away from the festivities. This is all designed to discourage guests from using their phones,” the source added.
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