Sam Worthington wants to keep his son out of the spotlight.

The 39-year-old actor, who is notoriously private, ''doesn't want the attention'' that comes with his celebrity status as he would rather ''protect'' his six-month-old son Rocket Zot.

A source told Australia's Woman's Day magazine: ''Sam really doesn't want the attention ... He's doing what he can to protect his child.''

However, it seems his wife Lara Worthington, 28, is desperate to brag about her relationship with Sam and their new little bundle of joy as she's recently been sharing intimate details about their secret wedding last year.

The stunning model, who usually remains tight-lipped on her personal life, said last week: ''Sam and I, we got married nearly a year ago. Last December, the 28th.

''It was very intimate, we just popped in to Melbourne where Sam's family is from. It was just our families, less than 10 people. We wrote the whole celebration, we wrote all our vows. I was pregnant as well.''

''Just before the wedding I was in London, it was really cold at the time and finding a dress at six months pregnant [was difficult]. I found something at Louis Vuitton.''

The couple sparked rumours they had got hitched last year when the model altered her Instagram handle by adding her husband's surname to become Lara Bingle Worthington.

They confirmed speculation earlier this year but refused to divulge too many details about their big day.

The loved-up pair also hid their pregnancy news until the very last minute, revealing via social media they'd welcomed their first child into the world in March this year.