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Blake Lively and Ryan Reynolds in New York, 20 Oct 2014.

Blake Lively has given birth to her and Ryan Reynolds’ first child, US media reported on Monday.

The actress, 27, and her actor husband, 37, who married in 2012, became parents over the holidays, the New York Post’s Page Six reports. The sex, name and weight of the baby were not confirmed.

Lively delivered earlier than expected, just before the new year, near their home in Bedford, New York; the paper reports that mum and baby are both healthy and doing well.

The actress last year launched a lifestyle website, Preserve, which crashed under the volume of traffic when she announced her pregnancy there on October 6, 2014.