Margot Robbie's super secret surprise wedding to Tom Ackerley

Margot Robbie has married Tom Ackerley in a surprise ceremony in Australia. Photo/Getty

Margot Robbie has got married in a top secret ceremony in Australia.

The Suicide Squad star has tied the knot to her British director partner Tom Ackerley - who she has been dating for three years - on Australia's Gold Coast, near the town of Dalby where she grew up.

A friend told Australia's Woman's Day magazine: "The Gold Coast was somewhere she always wanted to get married, given it's where she was raised as a kid, on her grandparents' farm."

The couple's guests were sworn to secrecy about their big day and the blonde beauty is said to have got her way about the location of their nuptials.

The insider added: "Tom initially wanted to get married in the UK, but he knows how much it means to Margot to tie the knot on home soil and how special it is for her, so he didn't put up much of a fight.

"They decided to marry around Christmas so they could spend time with both their families afterwards, which they've never done before."

But sources told Australia's Courier-Mail newspaper that Robbie, 26, walked down the aisle in Ewingsdale, New South Wales.

Robbie and Ackerley are said to have got engaged over the summer and managed to keep it a secret.

Attendees at the nuptials included the star's brothers Lachlan and Cameron, and her sister Anya.

But the actress is estranged from her dad Doug so mother Sarie is thought to have given her away.

On Saturday, Cameron wrote on Instagram: " The joys holiday travels; loving families being reunited, gift giving, great food and then... the beautiful realisation that after this flight, having children is very much an optional choice. (sic)"

Margot and Tom met on the set of Suite Française and live together in London.

The Wolf of Wall Street star recently admitted she thinks their romance is so strong because they're both so open.

She said: "Over the years, you experience enough situations and your share of heartbreak that you tend to build up defensive walls.

"That happens to most people. The trick is to be able to learn from your previous relationships and become stronger, so that you can allow yourself to be more open and vulnerable again."

- Bang! Showbiz