Wissam Al Mana and Janet Jackson attend Kira Plastinina's fashion show on October 25, 2012 in Moscow, Russia. Credit: Gennadi Avramenko/Epsilon/Getty Images

What has Janet Jackson’s boyfriend done for her lately?

A source tells Us Weekly that Qatari billionaire Wissam Al Mana "gave her a huge, expensive ring" earlier this year.

"She's afraid it will get lost, so she keeps it locked up!"

The luxury-brand mogul, 37, will spare no expense on his nuptials to Miss Jackson, set for spring in Qatar.

The affair "will cost millions," reveals a second Jackson insider. "He is flying in all of Janet's friends and family on private jets." (Quick refresher: The L.A.-based singer has seven siblings and more than 20 nieces and nephews.)

Adds the source, "He wants to get a top chef to create a custom menu."

The ceremony will undoubtedly be "a circus," another source says.

The twice-wed Nutrisystem spokeswoman, 46 -- who split from Jermaine Dupri in 2009 -- is eager to make it official with her love of two years.

"She wants kids," says the Jackson source. "If she can't have them, she will adopt."