As the singer prepares to take the stage on Aug. 27 at Caesars Palace's Colosseum, she opens up to PEOPLE about her decision to resume her residency despite her husband René Angélil's ongoing battle with cancer.
"I am scared of losing him, because it's bad," she says in this week's issue. "But I have to show myself, my husband and my kids that I'm strong and we're okay."
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