Naomi Watts and her youngest child Kai, 15, look the spitting image of one another as they step out in glamorous gowns during Dior fashion show

Naomi Watts and her youngest child Kai were two peas in a pod on Monday as they stepped out in stylish dresses at the Dior pre-fall fashion show in Brooklyn.

The mother-child duo looked radiant in ankle-length gowns, which featured flowing skirts, and designer accessories as they caught up with friends.

Opting for a plunging neckline, the Australian actress, 55, looked very chic in an all-white frock with ruffled sleeves as she accessorised with a long gold necklace.

She elevated her angelic look with a black designer handbag, a chunky black ring, and towering heels which boasted a gold sheen. 

Meanwhile, Naomi's teen Kai, 15, who was born Samuel, did Dior proud, stepping out in the brand's red and white floral pleated skirt worth $4,900.

Naomi Watts, 55, (left) and her youngest child Kai, 15, (right) were two peas in a pod on Monday as they stepped out in stylish dresses at the Dior pre-fall fashion show in Brooklyn

The mother-child duo looked radiant in ankle-length gowns, which featured flowing skirts, and designer accessories as they caught up with friends. Pictured with Alexandra Shipp

Naomi has a close bond with her youngest child, who she shares with ex Liev Schreiber, along with her son, Sasha (seen together in 2015)

Kai paired it with the matching embroidered sweater, worth $4,500, from the same fashion label and accessorised with simple black pumps and a handbag.

Naomi and Kai styled their blonde locks in much the same fashion before highlighting their near-identical features with minimal makeup looks.  

Naomi shares her two children, Alexander, 16, and Kai, with her ex-partner Liev Schreiber, from whom she separated in 2016 after 11 years together.

Meanwhile, Naomi's teen Kai did Dior proud as they stepped out in the brand's red and white floral pleated skirt worth $4,900

Naomi and Kai styled their blonde locks in much the same fashion before highlighting their near identical features with minimal makeup looks

Opting for a plunging neckline, the Australian actor looked very chic in an all-white frock with ruffled sleeves as she accessorised with a long gold necklace

Despite her break-up with Liev, the former couple have remained on friendly terms and are committed to co-parenting their two children. 

In June last year, Naomi tied the knot with her partner Billy Crudup, 55, at a New York City courthouse.

She shared news of her marriage to Instagram posting a photo of the lovebirds as they posed on the steps of Manhattan courthouse shortly after tying the knot.

Kai paired the stunning dress with a matching embroidered sweater, worth $4,500, from the same fashion label before accessorising with simple black pumps and a handbag

Naomi elevated her angelic look with a black designer handbag, a chunky black ring, and towering heels which boasted a gold sheen. Pictured with Rosamund Pike

The British-Australian star stunned in a $7,400 white Oscar de la Renta Sweetheart Water Lilly Guipure dress as she captioned the post: 'Hitched.'

Naomi first sparked rumours she and Billy were engaged earlier in the year when she debuted an enormous diamond which looked to be an engagement ring.

Naomi and Billy began their relationship in 2017, a year after her split from Liev, just months after they met on the set of her Netflix series Gypsy.

In it, Billy starred as Naomi's husband as she played a therapist who uses an alias to develop close and unethical relationships with people connected to her patients.