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."

This article originally appeared on Usmagazine.com: Janet Jackson, Billionaire Boyfriend Wissam Al Mana Engaged, Planning Spring Wedding