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Britney Spears says she feels "horrible" after forgetting to pay for a meal at the Cheesecake Factory earlier this week. 

The pop princess and her boyfriend David Lucado were photographed all smiles at the restaurant in Thousand Oaks, California, clutching doggie bags on their way out.  But apparently they'd left behind a check for about $30 at their table inside. 

Britney's rep tells TMZ there's a simple explanation behind the accidental dine-and-dash.  Britney had supposedly asked one of her security guards to take care of the bill for her, but it was never handled. 

The star still has a few weeks left to relax before having to head back to Las Vegas.  She'll be back on stage for her "Piece Of Me" show at the Planet Hollywood starting August 15th. 

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