EXCLUSIVE: Janet Jackson Plans to Bring Baby Eissa on Tour, Will Start 'Rigorously Dieting,' Source Says

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Janet Jackson is getting ready for her big comeback.

The 50-year-old singer told fans on Monday about her plans to continue her tour -- formerly known as Unbreakable, the name of her latest album, though she's now decided to call it The State of the World Tour -- after taking a break last year due to her pregnancy. A source close to the Jackson family now tells ET that Jackson is planning to tour with her almost four-month old son, Eissa.

Last month, news broke that Jackson and her estranged husband, Wissam Al Mana, have split.

WATCH: Janet Jackson Breaks Her Silence on Split From Wissam Al Mana: 'The Rest Is In God's Hands'

"She will be in court to flesh out the dissolution of her marriage," the source says. "Touring with baby Eissa could be a possible problem but she's hoping it's not."

The source says her older brother, Randy Jackson, will be with her on tour to help take care of his nephew.

"He's her primary source of emotional support and may be the perfect guardian for her son while she's on tour," the source adds.

According to the source, Jackson is preparing for this to be "her greatest tour ever."

"She'll be coming out full force and unrestricted," the source says. "Janet will begin rigorously dieting. She wants to look her best for herself and her fans."

Jackson joked about her post-baby body in her video message to fans on Monday.

"Hey, you guys, it's me, Jan, just in case you don't recognize me since I have put on quite a few since I had the baby," she said, laughing. "But I thank God for him, he's so healthy, so beautiful, so sweet, so loving, such a happy baby."

Jackson also broke her silence about her split from Al Mana. "Yes, I separated from my husband," she confirmed. "We are in court and the rest is in God's hands."

WATCH Wissam Al Mana Pens Emotional Message to Janet Jackson Following Split

Still, the "Rhythm Nation" singer said she's excited to resume her tour on Sept. 7, and gave a sweet shout-out to her fans.

"I want to thank you guys for your patience and for all of your support throughout the years," Jackson said. "Thank you so much."

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