The 26-city tour is to begin Feb. 13 at the U.S. Airways Center in Phoenix, Ariz.
The Grammy Award-winning recording artist was to perform at the "Power of Pink" benefit for Saint John's Health Center and the John Wayne Cancer Institute in Los Angeles Monday night and will be the focus of a VH1 "Storytellers" documentary.
She also is booked to sing her new song "Try" at the American Music Awards Sunday, her representatives said.
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