David Walliams and ex-wife Lara Stone throw son Alfred, five, extravagant superhero-themed birthday party complete with Batmobile

He has been described as 'the fastest growing children's author in the UK', with a literary style which is comparative to Roald Dahl.

And David Walliams let his imagination run wild for his son Arthur's fifth birthday, as he hosted a lavish superhero-themed party for the youngster on Sunday.

The Britain's Got Talent judge, 46, ensured he arrived to the bash in style, turning up in a Batmobile, while his ex-wife Lara Stone was also spotted going for a spin with Arthur and Batman. 

Batmobile! David Walliams went all out for his son Arthur's fifth birthday, as he took to Instagram to post a slew of snaps from the youngster's lavish superhero-themed party on Sunday

Batmobile! David Walliams went all out for his son Arthur's fifth birthday, as he took to Instagram to post a slew of snaps from the youngster's lavish superhero-themed party on Sunday

Posting a slew of snaps on Instagram, David showed off his inner kid as he posed in the swanky convertible which came complete with an 'emergency bat-turn lever'.

After his impressive entrance, the comedian proceeded to tell his 807k followers about his ride. 

Littering his Instagram with numerous snaps of the heavily armored, weaponized vehicle used to fight villains, he captioned the shots: 'In THE Batmobile' and 'Best car ever'.

Inner kid: The Britain's Got Talent judge, 46, ensured he arrived to the bash in style, turning up in a Batmobile, while Lara Stone was also spotted going for a spin with Arthur and Batman

Inner kid: The Britain's Got Talent judge, 46, ensured he arrived to the bash in style, turning up in a Batmobile, while Lara Stone was also spotted going for a spin with Arthur and Batman

Thrilled: David couldn't hide his excitement as he posed in the swanky convertible which came complete with an 'emergency bat-turn lever'

Thrilled: David couldn't hide his excitement as he posed in the swanky convertible which came complete with an 'emergency bat-turn lever'

Beaming: After his impressive entrance, the comedian proceeded to tell his 807k followers about his ride

Beaming: After his impressive entrance, the comedian proceeded to tell his 807k followers about his ride

David also posted a photo from the garden party, posing with model Erin O'Connor. 

The 40-year-old looked stunning in a simple white t-shirt and black sunglasses, while the television personality opted for a brown v-neck t-shirt. 

Earlier in the day, David's ex-wife Lara shared a sweet throwback snap from her son's birth to honour him turning five.

Star-studded: David also posted a photo from the garden party, posing with model Erin O'Connor

Star-studded: David also posted a photo from the garden party, posing with model Erin O'Connor

Excited: Littering his Instagram with numerous snaps of the heavily armored, weaponized vehicle used to fight villains, he captioned the shots: 'In THE Batmobile' and 'Best car ever'

Excited: Littering his Instagram with numerous snaps of the heavily armored, weaponized vehicle used to fight villains, he captioned the shots: 'In THE Batmobile' and 'Best car ever'

Throwback: Lara Stone, 32, offered an intimate glimpse into her private life by sharing a sweet throwback of her son Alfred on Saturday

Throwback: Lara Stone, 32, offered an intimate glimpse into her private life by sharing a sweet throwback of her son Alfred on Saturday

The star captioned the image: '5 whole years ago.. Don't even know what to say.. Just feel incredibly lucky to have been blessed with such an amazing little (big) boy #likeitwasyesterday'.

Lara lovingly looked up at the camera as her newborn lay on her chest in the adorable snap.

She now co-parents her son with ex-husband Walliams following their split, and has previously said that she struggles to be apart from Alfred during promotional duties.

Strike a pose: The model, who shares her son with comedian David Walliams, posted the black and white pictured in honour of his fifth birthday.

Strike a pose: The model, who shares her son with comedian David Walliams, posted the black and white pictured in honour of his fifth birthday.

The former couple, who married in 2010, were granted a decree nisi by Judge Heather MacGregor at London's Central Family Court in a hearing lasting less than 60 seconds in September 2015.

Comic Walliams had cited Lara's 'unreasonable behaviour' for the 'quickie divorce', with their case being put through alongside 20 other couples.

Their relationship began after Lara's now-beaten battle with alcoholism following a stint in rehab in 2009. 

Mummy duties: She now co-parents her son with ex-husband Walliams following their split, and has previously said that she struggles to be apart from Alfred during promotional duties (Pictured in 2014)

Mummy duties: She now co-parents her son with ex-husband Walliams following their split, and has previously said that she struggles to be apart from Alfred during promotional duties (Pictured in 2014)

Lara has since embarked on a new relationship with businessman David Grievson, three years after her divorce from David Walliams.

The Dutch supermodel, 34, reportedly met London based Grievson through friends in January and has since been seen hand in hand with the London based businessman at Chanel's Paris Fashion Week presentation in March.

A source told The Sun: 'Lara and David are really in love, their relationship has moved faster than expected but they seem completely besotted.' 

Lara has previously been linked with Australian model Jordan Barrett and actor Andrew Gray, but her new romance with Grievson is thought to be her first serious relationship since splitting with Walliams. 

New couple: Lara has embarked on a new relationship with businessman David Grievson (pictured together, in Sri Lanka), three years after her divorce from David Walliams

New couple: Lara has embarked on a new relationship with businessman David Grievson (pictured together, in Sri Lanka), three years after her divorce from David Walliams

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