The Formula One ace, 37, took to Instagram on Tuesday to share adorable pictures of him hugging the two youngsters as they watched Buzz Lightyear together.

He also shared a sweet photograph of him with the pair, proving he was every inch the devoted uncle as he picked them up from the school gates.

Lewis kept it casual in a white T-shirt and washed out blue jeans, which he teamed with a white Nahmias baseball cap and sunglasses.

He was also seen wearing a black hoodie as he cuddled up to his niece Willow and nephew as they all lay on the sofa together to watch Disney’s Buzz Lightyear.

In a caption alongside the gallery of snaps, Lewis detailed his time with his niece and nephew – who are one of his half-sister’s kids – sweetly describing it as the ‘best day’.

He penned: ‘Picked my niece and nephew up from school, hugged them tight, watched Buzz Lightyear. Best days. So proud of them.’

Sweet: The Formula One ace, 37, took to Instagram on Tuesday to share adorable pictures of him hugging the two youngsters as they watched Buzz Lightyear together

Family: He was seen wearing a black hoodie as he cuddled up to his niece Willow and nephew as they all lay on the sofa together to watch Disney’s Buzz Lightyear

Lewis often spends quality time with his niece and nephew and takes to social media to share sweet snaps of them all together.

Born Lewis Carl Davidson Hamilton, the racing driver grew up in the Hertfordshire town of Stevenage to parents Anthony and Carmen.

After Hamilton’s parents split when he aged two, he was raised by his mother until aged 12, along with his two half-sisters, Nicola and Samantha Lockhart

Doting uncle: He penned: ‘Picked my niece and nephew up from school, hugged them tight, watched Buzz Lightyear. Best days. So proud of them’

Cosy: Lewis shared a selfie with his niece Willow as they cuddled on the sofa while watching a movie

Selfies: Lewis documented his day with his niece and nephew as he proved he was a dedicated uncle

His latest post comes after Lewis was slammed by former Formula 1 world champion Jacques Villeneuve earlier this month.

Jacques spoke out on his opinion that Lewis’ recent behaviour is unacceptable – after the Formula 1 star fumed over his recent Dutch Grand Prix loss.

Red Bull driver Max Verstappen took the win at the competition, after overtaking Lewis, who was in first place just 15 laps before the end.

But the star went from first to fourth after he was put on medium tyres, fuming to his team: ‘I can’t believe you f****** f***** me. I can’t tell you how ****** I am. That was the biggest f*** up.’

Close: In a caption alongside the gallery of snaps, Lewis detailed his time with his niece and nephew – who are one of his half-sister’s kids – sweetly describing it as the ‘best day’

And this outburst led to Jacques claiming that the attitude shown by Lewis ‘is not befitting a champion’ in his Formule1.nl column.

He said: ‘I was amazed by Lewis Hamilton’s outburst in the race and especially the way it was done.

‘He was aggressive, almost insulting. It is good that he has apologised, but this is not befitting a champion. After everything the team has done for him, you shouldn’t be speaking to them like that.’

Criticism: His latest post comes after Lewis was slammed by former Formula 1 world champion Jacques Villeneuve earlier this month after he fumed over his recent Dutch Grand Prix loss

Lewis did eventually apologise to his team, sharing to Instagram: ‘I didn’t get it right last week and we didn’t get it right today (Sunday), but we win and lose as a team.

‘We have been through worse. Everyone is doing their best and that’s all we can do.

‘We will rise and win again. I have 100% faith in this team and where we are heading.’

The result meant that Max Verstappen collected his 10th win of the year, which has increased his points advantage in the driver’s championship to 109, whereas Hamilton remains without a win this season and sixth in the standings.

No success: Lewis is yet to win a race this season and is currently 6th in the driver’s championship