Spooky siblings! Nicole Kidman dresses as a German barmaid while her lookalike sister Antonia dons a skeleton costume as they celebrate Halloween early

Halloween has come early for the Kidman clan. 

Actress Nicole, 52, and her lookalike sister Antonia, 49, ushered in the spooky season on Tuesday by taking to Instagram with a snap of themselves dressed in playful costumes. 

The post, which was uploaded to Nicole's page, showed the A-lister beaming in what appears to be a German barmaid costume.  

'Early Halloween party with my sis and our families!' Actress Nicole, 52, and her lookalike sister Antonia, 49, ushered in the spooky season on Tuesday by taking to Instagram with a snap of themselves dressed in playful costumes

'Early Halloween party with my sis and our families!' Actress Nicole, 52, and her lookalike sister Antonia, 49, ushered in the spooky season on Tuesday by taking to Instagram with a snap of themselves dressed in playful costumes

Nicole threw her flaxen curls into a messy up-do, and completed her look with black eye-liner and soft pink lipstick. 

Meanwhile, Antonia was pictured cosying up to her famous sibling in a black-and-white skeleton outfit. 

The Singapore-based mother-of-six tied her brunette locks into two pigtails and applied a subtle swipe of blush to her cheeks.

Tight-knit: Nicole and Antonia have always had a close bond. Pictured together in 2003

Tight-knit: Nicole and Antonia have always had a close bond. Pictured together in 2003

'Early #Halloweenparty with my sis and our families,' Nicole wrote in the caption, making sure to tag Antonia in the image. 

While Nicole may be the more famous of the two sisters, former journalist Antonia is also successful in her own right, having recently graduated with a law degree.  

Antonia received her coveted degree in April, with Nicole taking to Instagram to congratulate her on the huge achievement days later. 

Successful sisters! While Nicole may be the more famous of the two sisters, former journalist Antonia is also successful in her own right, having recently graduated with a law degree. Pictured together in 2005

Successful sisters! While Nicole may be the more famous of the two sisters, former journalist Antonia is also successful in her own right, having recently graduated with a law degree. Pictured together in 2005

Kicking goals: While Nicole may be the more famous of the two sisters, former journalist Antonia is also successful in her own right, having recently graduated with a law degree

'Congratulations to my darling sister': A-lister Nicole paid special tribute to Antonia (pictured) after she received her law degree earlier this year 

'Congratulations to my darling sister who graduated with her law degree two days ago,' she wrote next to a photo of Antonia posing in her graduation gown., 

'Studying, raising six kids and starting a new phase in her career, and she's doing it all with grace and humility,' the Oscar winner wrote.

'I just wanted to acknowledge her because so much of what makes me, me, is my family,' she added.

Nicole also posted a picture of Antonia standing alongside their mother Janelle.

The Big Little Lies star continued in the caption: 'I also want to acknowledge our mum, who from when we were little, believed in us, educated us, guided us and continues to do so. I love both of these women so much. X.'

Proud: Nicole also posted a picture of Antonia standing alongside their mother Janelle (left). She continued in the caption: 'I also want to acknowledge our mum, who from when we were little, believed in us, educated us, guided us and continues to do so. I love both of these women so much'

Proud: Nicole also posted a picture of Antonia standing alongside their mother Janelle (left). The Big Little Lies star continued in the caption: 'I also want to acknowledge our mum, who from when we were little, believed in us, educated us, guided us and continues to do so. I love both of these women so much'

Nicole Kidman and sister Antonia celebrate Halloween early

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