Sam Worthington, Lara Bingle become proud first time parents

Sam Worthington and his girlfriend Lara Bingle have become parents for the very first time.

According to a source, the pair's families had been staying at the actor's place, and he couldn't be happier with the new arrival, Us magazine reported.

It was revealed back in September that the 38-year-old 'Avatar' star and Bingle, 27, were expecting their first child, though they had kept mum about it, Bingle was spotted with her growing baby bump on several occasions.

The pair had started dating in September 2013, and has been "inseparable" as per the reports.