'What a great afternoon!' Naomi Watt's ex-partner Liev Schreiber takes their son Samuel Kai, 11, to the ballet in New York City

Liev Schreiber took his son Samuel Kai to the ballet on Sunday.

Experiencing a backstage tour courtesy of New York City's American Ballet Theatre, the father-son duo later said they had a 'great afternoon'.

The Ray Donovan star, 52, shared a photo to Instagram of himself with Samuel, 11, and the American Ballet Theatre's principal dancer Misty Copeland. 

'What a great afternoon!' Naomi Watt's ex-partner Liev Schreiber (left) took their 11-year-old son Samuel Kai (centre) on a backstage tour of the American Ballet Theatre in New York City on Sunday. Pictured with dancer Misty Copeland (right)

'What a great afternoon!' Naomi Watt's ex-partner Liev Schreiber (left) took their 11-year-old son Samuel Kai (centre) on a backstage tour of the American Ballet Theatre in New York City on Sunday. Pictured with dancer Misty Copeland (right)

Samuel, who goes by his middle name Kai, smiled while posing in a longsleeve grey shirt and jeans.

Liev shares custody of Samuel with his ex-partner Naomi Watts, whom he split from in 2016 after 11 years together. 

The former couple, who never married, also have an older son: 12-year-old Sasha. 

Enthusiastic: Samuel, who goes by his middle name Kai, has an interest in movies and the performing arts, which is perhaps unsurprising given that his parents are both actors

Enthusiastic: Samuel, who goes by his middle name Kai, has an interest in movies and the performing arts, which is perhaps unsurprising given that his parents are both actors

Samuel is known to have an interest in movies and the performing arts, which is perhaps unsurprising given that his parents are both actors.

In July 2017, Liev attended the San Diego Comic-Con with his youngest son, who was dressed as Harley Quinn from Suicide Squad.

Speaking to Harper's Bazaar in August, Naomi revealed how her split from Liev had changed their family dynamic. 

Modern life: Liev shares custody of Kai and his eldest son Sasha, 12, with his ex-partner Naomi Watts, whom he split from in 2016. Pictured with his two children

Modern life: Liev shares custody of Kai and his eldest son Sasha, 12, with his ex-partner Naomi Watts, whom he split from in 2016. Pictured with his two children

The English-born actress, 51, said that she and Liev were 'better friends now' than when they were together.

'Liev and I always knew we had to put the kids first and that, no matter what, we would respect each other and take care of each other in the best way going forward for the benefit of our children,' she said.

'And we've kept things in a great space. We're easy with each other and we want the best for each other. Our friendship is better now than it ever was.'

'We've kept things in a great space': Naomi said in August that she and Liev, who never married during their 11-year relationship, were 'better friends now' than when they were together. Pictured on February 28, 2016 in Hollywood

'We've kept things in a great space': Naomi said in August that she and Liev, who never married during their 11-year relationship, were 'better friends now' than when they were together. Pictured on February 28, 2016 in Hollywood

'What a great afternoon!' Naomi Watt's ex-partner Liev Schriber takes their son Kai to the ballet

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