Family portrait! Siblings Kate and Oliver Hudson pose for pictures with fans in Santa Monica

They are both rocking hairdos that make them virtually unrecognizable.

And yet somebody clearly spotted Oliver and Kate Hudson as they hung out in LA on Friday.

The siblings happily jumped in for photos with delighted fans in Santa Monica.

Family portrait! Siblings Oliver and Kate Hudson posed for pictures with fans in Santa Monica on Friday

Family portrait! Siblings Oliver and Kate Hudson posed for pictures with fans in Santa Monica on Friday

They had managed to pick out 38-year-old Kate despite her new cropped looked, which she adopted to appear in Sia's directorial debut, Sister.

She wore a long black and white maxi dress with a battered denim jacket and shades.

While her feet modeled a pair of white slides, in her hand carried a pair of black Nike trainers, suggesting she was heading to or coming from from somewhere a little more physically demanding.

Oliver, 41, meanwhile was dressed super casual in shorts, T-shirt shades and a baseball cap.

Cropped: They had managed to pick out 38-year-old Kate despite her new cropped looked, which she adopted to appear in Sia's directorial debut, Sister

Cropped: They had managed to pick out 38-year-old Kate despite her new cropped looked, which she adopted to appear in Sia's directorial debut, Sister

Sporting long curling hair and a face full of fuzz, he strongly resembled his dad Kurt Russell — even though Kurt Russell is not his biological father.

Both her and his sister came from mom Goldie Hawn's second marriage to musician Bill Hudson.

Bill and Goldie married in 1786 but filed for divorced just four years later, when Oliver was four and Kate was just one.?

In 1983 Hawn got together with Russell — whom she has been with ever since — who raised the children as his own.

Laid back: Oliver, 41, meanwhile was dressed super casual in shorts, T-shirt shades and a baseball cap

Laid back: Oliver, 41, meanwhile was dressed super casual in shorts, T-shirt shades and a baseball cap

Snap: Sporting long curling hair and a face full of fuzz, he strongly resembled his dad Kurt Russell — even though Kurt Russell is not his biological father

Snap: Sporting long curling hair and a face full of fuzz, he strongly resembled his dad Kurt Russell — even though Kurt Russell is not his biological father

Biological dad: Both her and his sister came from mom Goldie Hawn's second marriage to musician Bill Hudson?

Biological dad: Both her and his sister came from mom Goldie Hawn's second marriage to musician Bill Hudson?

For years, the former couple have bickered publicly about Goldie’s claims that he all but abandoned the two famous siblings.

The children, for their part, back their mother's claim: On Father's Day two years ago Oliver caused a storm when he posted an throwback Instagram pic of himself and his sister as children with their dad, with the caption: ‘Happy Abandonment [email protected]

Kate followed it up with an intimate black and white photograph of herself alongside Goldie’s long-term love Kurt Russell saying: ‘Pa, just simply... thank you. Happy Father’s Day. I love you to the moon and back.’

In response, their father — who blames his ex-wife of poisoning them against him, and always insisted he tried to stay in contact — declared his eldest two 'dead to him'.?

Ouch: On Father's Day two years ago Oliver caused a storm when he posted an throwback Instagram pic of himself and his sister as children with their dad, with the caption: ‘Happy Abandonment Day....@katehudson.’?

Ouch: On Father's Day two years ago Oliver caused a storm when he posted an throwback Instagram pic of himself and his sister as children with their dad, with the caption: ‘Happy Abandonment [email protected]’?

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