(CNN) "There's something that you all need to understand," Madonna said during her Las Vegas concert, while perched atop a piano, legs swinging. "And that is, that a queen is never late."

And despite the cheers that came from the crowd, not everyone agrees. One Florida fan is betting the law won't agree either.

Nate Hollander is taking the singer to court over her late start times.

Hollander filed a lawsuit Monday in Miami-Dade County court against both Live Nation and Madonna. He alleges that the change in start times for her Madame X Tour is a breach of contract made between the singer and the ticket buyer.

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