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Ruby Fleetwood, the 6-year-old daughter of musician Mick Fleetwood, was hospitalized at Cedars Sinai Pediatric ICU after losing consciousness in a swimming pool, a spokesman tells ET.

The family says Ruby was discovered unconscious on a playdate Friday after doing somersaults in a pool. (She was not doing cartwheels as some Web reports have claimed.) She was revived by CPR and rushed to West Hills Hospital before being transferred to Cedars Sinai.

"Ruby was the victim of an accident that is potentially extremely serious, but she is doing quite well and the medical staff here at Cedars is optimistic that she will make a full recovery," Dr. Keith Kimble said in a statement.

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