NEW YORK - Fans are congratulating Blake Lively and Ryan Reynolds following news that the actress has given birth to their first child.

She gave birth near their house in Bedford, New York, just before the New Year, the New York Post reported on Monday.

"The baby came early but everyone is happy and healthy," a source told Us Weekly. "The Bedford house is all prepared. They're going to stay up there for the baby's first days."

Fans on Twitter have started to chat about how "perfect" the "royal baby" - whose gender was not revealed - would look after inheriting the attractive genes of the parents.

"Hello most beautiful baby in the world," wrote one Twitter user.

Lively, 27, and Reynolds, 37, were married in September 2012.

During her pregnancy, the Gossip Girl star has been stunning people by looking stylishly pregnant in various attire on the red carpet and on New York City streets.