Selena Gomez has cancelled thirteen dates in Asia and Australia so she can "spend some time on myself in order to be the best person I can be".
The Princess Protection Program star was due to start the tour in Asia in mid-January before starting her first ever tour of Australia at the start of February.
In a statement issued by promoter Live Nation (as quoted here), she said the following things about it all:
"My fans are so important to me and I would never want to disappoint them. But it has become clear to me and those close to me that after many years of putting my work first, I need to spend some time on myself in order to be the best person I can be. To my fans, I sincerely apologize [SHE MEANS APOLOGISE] and I hope you guys know how much each and every one of you mean to me."
So there we have it. No lines to read between there. A completely straightforward explanation for cancelling a tour.