Britney Spears Gave Birth To Her Second Son

The unplanned second infant of Britney Spears and Kevin Federline finally came to the world.

The baby boy, who was born just before 2 a.m. Tuesday at a Los Angeles hospital, was delivered via a scheduled C-section.

"Kevin had a smile on his face. He looked happy and upbeat," says an observer.

The whole thing, says a source, was smooth – just as the mom-to-be had predicted to PEOPLE back in August, saying childbirth "will be a piece of cake."

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