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.

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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."

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