Kelly Clarkson followers seemingly by no means imagined a second like this — the Grammy winner canceled the opening present for her Las Vegas residency simply 90 minutes earlier than it was supposed to start out.

KC broke the information on Instagram Friday evening and blamed the surprising cancellation on her voice … saying she wanted time to relaxation as a result of the residency prep and rehearsal took a “toll” on it — and she or he desires every thing to be “good” for her devoted followers.

She added … “We have now been working 24/7 to make Studio Classes essentially the most intimate and extraordinary expertise with and for my unimaginable followers. I’m past grateful that you simply all the time present up for me and I’m devastated to should postpone tonight and tomorrow’s opening at Caesars.”

The “American Idol” alum confirmed she is going to hit the stage subsequent weekend — so of us hoping to catch her Saturday present are additionally outta luck.

She didn’t reveal if the affected reveals might be rescheduled. TMZ reached out to her rep for clarification … however up to now, no phrase again.

The “Breakaway” singer introduced her Las Vegas residency on the Colosseum at Caesars Palace in February … simply earlier than she prompted concern by going MIA from her discuss present.

She has dates scheduled by means of by means of mid-November.