Kylie was expected to perform on stage next to U2 on Monday, November 13, as a thank you for Bono's appearance at her second concert part of the resumed "Showgirl Homecoming" tour, which took place last Sunday, in Sidney.
However, Kylie, who hasn't fully recovered after her cancer treatment, couldn't join U2 on stage last night.
"Kylie called Bono to explain that she had worn herself out. She is really feeling the physical effects of her return to the stage. He told her to spend Monday resting, get her energy levels fully restored and relax," The Sun newspaper quoted a source as saying.
"It wasn't a problem at all. Everyone realizes Kylie is putting herself through the mill for the tour," the source added.
Kylie Minogue, who has successfully completed chemotherapy treatment last year, in December, admitted that the disease has changed her as an individual and that she cannot return to the way she was before the diagnosis.
"Since my cancer diagnosis, my whole world changed - I have learned and experienced so much about myself and others. It's great to be able to make those first steps back into the life I knew before, the one I now better know," confessed Kylie to Vogue magazine, last month.
"I actually can't do the same things. I can't wear the same costumes. How can I do that a year-and-a-half later and feel that I'm meant to be replicating what that was, when I'm not the same person?," declared the singer at her perfume launch.
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