The 46-year-old singer began dating 37-year-old billionaire Wissam in 2009 after her split from longtime boyfriend Jermaine Dupri.
It was revealed that Janet and Wissam got engaged earlier last year and are planning to get married this spring.
In July 2012 Janet got into a vicious fight with her late brother Michael’s 14-year-old daughter and the pair haven’t been on good terms since.
‘Janet and Paris haven’t made up since their fight last summer,’ a source told Star magazine.
‘Now Paris claims she plans on boycotting the wedding.’
The Jackson family was rife with conflict last summer.
Family matriarch Katherine lost custody of her three grandchildren Paris, Prince and Blanket after they were unable to reach her for over nine days.
The King of Pop’s siblings Janet, Rebbie and Randy were apparently banned from entering Katherine’s house after they demanded that estate executors resign. They claimed Michael’s 2002 will was fake. READ MORE