Six-time Grammy winner Toni Braxton was admitted to a Las Vegas hospital for chest pains Monday night, media reports said.- Xinhua

The 40-year-old "Un-Break My Heart" singer, in Vegas headlining a five-nights-a-week show at the Flamingo Hotel and Casino, is currently listed in good condition and is expected to be released soon.

The cause of the chest pain was not immediately known. But Braxton has a heart condition called pericarditis, which she found out about after she gave birth to her second son.

She has since been named a spokeswoman for the American Heart Association since her disclosure.

The Flamingo Hotel and Casino was offering refunds to the canceled Tuesday show. No immediate decision was made whether Braxton's Wednesday show would be canceled, hotel spokeswoman Deanna Pettit said.

Braxton's act, "Toni Braxton: Revealed," also has shows scheduled Thursday, Friday and Saturday in the vintage 720-seat Flamingo Showroom. Her two-year run at the Flamingo began in August 2006.