Jackson, who is 49, made the announcement in a nearly two-minute video message to fans. "We're in the second leg of the tour and there actually has been a sudden change," she said in the clip posted on Twitter. "I thought it was important that you be the first to know."

"My husband and I are planning our family," she revealed with a big smile. "I'm gonna have to delay the tour. Please if you can try and understand that, it's important that I do this now. I have to rest up, doctor's orders."

She stressed that she has not forgotten about her dedicated fans and added that she will launch the second leg of the Unbreakable World Tour as soon as possible.