*Janet Jackson will be entitled to $500 million if she stays married for a short five years.

Allegedly, the singer and Wissam al-Mana got secretly engaged last December and are planning to jump the broom in a lavish Muslim wedding in Qatar in the spring this year.

However, the potential union isn’t without critics. Her fiancée’s lawyers advised the billionaire to sign a pre-nup to protect his money, but he’s deciding against it, probably because she’s got her own fortune.

But he actually agreed to give her $500 million if they stay married at least five years.

(Whoa, say What!)

The 46-year-old singer and performer has been married twice before and was in a seven-year relationship with Jermaine Dupri.