MONACO PRINCESS OUT OF HIDING!

But Albert's wife looks unhappy at first public event

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MONACO'S troubled Princess Charlene made her first pub appearance since a five-month stint in a Swiss mental health clinic, but she wasn't smiling!

The 44-year-old blonde was snapped with cheating hubby Prince Albert and their seven-year-old twins, Gabriella and Jacques, at Monaco's, car-racing E-Prix, where a source says, "Princess Charlene looks pensive.”

Ironically, Albert, 64, who currently supports two love children, but denies a recent claim of a third, was waving and beaming as if he had everything under control.

But as GLOBE has reported, Charlene, a former Olympic backstroker for South Africa, has never seemed to fit in as the cooperative royal wife.