The 32-year-old singer - who married Jay Z in a low-key ceremony in April 2008 - reportedly thinks it is ''tacky'' the couple are planning to televise their nuptials on E! show 'Keeping Up with the Kardashians', but won't boycott the ceremony completely.
A source said: ''[She told Jay Z and Kanye] that under no circumstances will she be a part of any filming on the wedding day if it's for Kim's reality show.
''Jay and Beyoncé's wedding was shrouded in secrecy and extreme lengths were made to make sure their wedding was an intimate affair for friends and family, only. This will be the complete opposite. She thinks it's just tacky.
''Beyoncé's motto has always been, less is more. But clearly when it comes to Kim, more means more.
''She knows she'll have to go to the wedding, but really does not to want to.''
Kanye considers the couple - who have two-year-old daughter Blue Ivy together - ''family'' so Beyonce has promised to be there for his sake.
The source added to RadarOnline.com: ''Make no mistake, the only reason Beyoncé is going to the wedding is because Jay is best friend's with Kanye.''
It was previously claimed that Kim and Kanye - who have nine-month-old daughter North together - want all their guests to sign confidentiality agreements, but have agreed Jay Z and Beyonce won't have to comply with their strict security measures.
A source said: ''There is no way Kanye would ever even dare to ask Jay or Beyonce to sign a non-disclosure agreement, or take away their cell phones. He knows that neither one of them would betray his trust.''
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