The pop and R&B superstar's fifth album "Janet" sold over 7 million copies and boasted six Billboard Hot 100 singles, and just marked its 20th anniversary May 18.
The singer has raked in $260 million in album sales thanks to the success of "Control," "Janet" and "Rhythm Nation 1814," and she earned a further $81 million from music and book publishing fees.
Jackson, 47, has made over $500 million on her sold-out world tours and related tour sponsorships, and over $300 million from her big-screen roles in "The Nutty Professor II: The Klumps," "Poetic Justice" and "For Colored Girls."
In an interview with Billboard last week, Jackson revealed she's working on a new album. "I am working on a new project now. We are creating the concept and initial thoughts on the music," she said.
The youngest child of the Jackson family and sister to fellow performer Michael Jackson, Janet began her career in the early 1970s and became a pop culture icon. She announced in February that she married Qatari retail billionaire Wissam Al Mana in a private ceremony in 2012.