Sam Worthington and Lara Bingle Worthington have become proud new parents to a baby boy.

The 'Avatar' star and his model wife, who recently confirmed they secretly got married following wedding rumours last year, welcomed their first child into the world earlier this week.

Sources close to the 38-year-old star told E! News that Australian beauty Lara, 27, gave birth to their son a few days ago.

The couple have yet to officially comment on the arrival or reveal their newborn baby's name.

The happy news comes just days after Sam's sister Lucy Edwards poured cold water on rumours Lara had given birth to a little boy at Cedars-Sinai hospital in Los Angeles.

When congratulated by fans on Twitter on Wednesday (25.03.15), she replied: ''Sorry *****...no arrival''

But according to the MailOnline, she wrote that she was ''feeling happy'' on their mother Julia Worthington's Facebook page less than a day later.

Lara recently insisted that parenthood wouldn't change their jet-setting ways.

She said: ''Settling [down] doesn't mean being in one place. For me, it's about being settled in yourself. I like travelling and I like the life [Sam and I] have. I don't want to be pigeon-holed.''