Over the course of 2019, Oprah Winfrey has continued to stay busy. Not only has she brought back her beloved book club and partnered with Prince Harry on a new mental health initiative, but she has also planned something big to kick off 2020. Beginning on Jan. 4, the mogul will be traveling around the country with various celebrity friends on her new tour called "Oprah's 2020 Vision: Your Life in Focus." Who will be joining her on the road?

According to a new announcement that Winfrey made on her Instagram, she will be joined on her upcoming nine-city tour by some very famous friends. Her post can be seen below.

Her special guests will include Michelle Obama, Lady Gaga, Jennifer Lopez and more. The tour, which runs from Jan. 4 to March 7, will make stops in Atlanta, Dallas, and Denver, among other places. Additionally, this will be the mogul's first tour in five years.

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Another special guest that will be joining the TV personality on the road is her best friend and "CBS This Morning" anchor, Gayle King. The two, who have been friends for decades, have always been very open about their friendship. In the September issue of Oprah's "O, The Oprah Magazine," the producer revealed the one thing that could have caused a rift between the two of them. For her part, King has also spoken about the kindest thing that the former "Oprah Winfrey Show" host ever did for her.

"Oprah's 2020 Vision: Your Life in Focus" begins Jan. 4 in Fort Lauderdale with Lady Gaga serving as the night's special guest. Tickets to all dates can be purchased at WW.com/Oprah or on Ticketmaster.

Oprah speaks onstage during the 2018 CFDA Fashion Awards at Brooklyn Museum on June 4, 2018 in New York City. Getty Images/Theo Wargo