And Jackson hasn't been taking any shortcuts. The new mom has been "training, dieting and eating clean," to achieve the results, our source says. Jackson's first tour stop is on Sept. 7 in Lafayette, Louisiana.
"Her pregnancy and having a healthy baby were her top priority, so when she canceled her last tour, she knew that she would be making it up to all of her fans once she got on the road again," the source shares.
"She'll call London home," the source says. "She's adjusted to life in London and co-parenting with her estranged husband."
"She and her brother, Randy, watched the [One Love Manchester] concert," the source says. "Her heart goes out to all the victims."
Meanwhile, it appears Jackson and 42-year-old Al Mana are on good terms. Last month, our source told ET that Al Mana sent Jackson a mix of over 100 roses and orchids
in celebration of her 51st birthday.
"Janet and her husband are separated, but have a mutual love and admiration for each other," the source noted. "There doesn’t seem to be a reconciliation in the future, but never say never."