Hamish Blake just unveiled his daughter's 8th birthday cake. And the brief was anything but easy.

It's that time of year when Hamish Blake stays up into the wee hours of the evening as part of his legendary cake-making marathon. This time marked his daughter Rudy's eighth birthday — and boy, did she have a hard brief this year.

'Cake night', as it's now called, started back in 2017, when his then-three-year-old boy Sonny requested a cake based on the movie Cars. The loving father rose to the occasion, and so, a tradition was born.

Now, bi-annually without fail, Hamish will stay up all night making a cake for Sonny, 11, or his daughter Rudy, eight.

Since Sonny requested a Cars cake, the briefs have grown wilder and wilder over the years — from a Rainbow Vomiting Unicorn, to a solvable Rubix Cube.

For Rudy's birthday on July 26th, the eight-year-old requested a cake based on her favourite doll … with a few extra features.

Watch: Hamish Blake reveals Rudy's 8th birthday cake brief. Post continues after video.

"I shall do what it takes to make the 8th birthday cake my amazing daughter (but slightly tricky cake customer) has her heart set on," Hamish wrote on Instagram ahead of cake night.

"It's a LOL doll (you're not expected to know this doll), with a giant rainbow plait in her hair, on a catwalk, with lights, in a one-shoulder pink ballgown, and her handbag swings."

It was a tough brief, made even harder by the comedian arriving home at 8.30pm after a flight from Melbourne.

"I am tired, you can't be this tired this early into proceedings. This usually comes 6 hours later," he said.

Still, Hamish was determined. So he went outside for some fresh air (a sip of whisky), and he was ready to bake.

He started by making the dolls head with a polystyrene ball. Using wire and a blowtorch, he cut the sphere into the shape of a face. He then attached the doll's head onto a pole, which would be used to hold the body.

Hamish fashioned the head out of a polystyrene ball. Image: Instagram/@hamishblakeshotz

Hamish was feeling pretty good about his ingenuity, until he showed his wife Zoë Foster-Blake who couldn't decipher what on earth he'd made, and decided to go to bed.

But he wasn't deterred. The comedian then iced the cake which he baked bought earlier from the store, before getting started on the rainbow plait.

As he began to weave the fondant colours together to make a braid, each strand kept breaking.

"I thought it would be like a hair plait, but it's not hair and it's not behaving like hair, so we're just going to move onto other stuff and come back to that," he said.

He then got started on the runway and the doll's body, made out of tinfoil, wire, and fondant. Yummy.

The foundations of the cake. Image: Instagram/@hamishblakeshotz

Things weren't going great. And Hamish thought he had figured out why.

"There's too much measuring," the father-of-two decided.

"That's not how we cake man, you gotta feel," he said as he rolled out the fondant another time. "You think Michelangelo was measuring every little thing?"

Hamish then moved on to designing the dress, then shaped it out of pink fondant and placed it around the tinfoil doll body.

Unfortunately, his 'no measuring just vibes' strategy let him down as the dress didn't reach the back.

No measuring, just vibes. Image: Instagram/@hamishblakeshotz

He had a break for some whisky, and then he fixed it. Then it was onto the eyes.

"They really take up a lot of real estate on the head… it really comes down to the eyes on this thing, the eyes are gonna make it," he said.

His first attempt didn't work.

"I don't think that's it, they need to be much bigger," Hamish said, before having another sip of whisky.

At this point it was 1am, and the fatigue and whisky were starting to take their toll as Hamish paused proceedings to give himself some winged eyeliner.

Quick break for some eyeliner. Image: Instagram/@hamishblakeshotz

After putting the makeup on the doll, it was time to return to the rainbow braid.

"Let's get your hair did, girl," he said.

"You are watching a drunk father hit a plait made of fondant with EVERYTHING he has."

As he attached the braid to the head, Hamish was concerned.

Hamish was nervous to attach the braid. Image: Instagram/@hamishblakeshotz

"Round about 1am. I always seem to be at my booziest right at the point I feel like I have to diffuse a landmine (with, like, a banana)."

But, he managed, and he described the finished result as… "Okay".

"I mean the brief was for her favourite doll, but there was also a chance my daughter was like, 'Hey, also make it kind of like a wild Aunty from Byron, but a little bit Medusa-y as well?'."

Doll or Medusa? Image: Instagram/@hamishblakeshotz

He then put some of his daughter's favourite lollies (killer pythons) around the edge of the cake, along with her name, before moving onto the lights and the handbag elements.

The comedian made the micro-black-and-gold handbag out of fondant and glitter, with Rudy's initial on the front, inspired by the Chanel logo. Then he attached the LED lights to the runway.

And just like that, at 3am, he was done.

"Thanks for hanging in there gang. Happy birthday to the greatest daughter I could imagine."

The finished product. Image: Instagram/@hamishblakeshotz

Two months, two cakes; a world of chaos.

Rudy's cake comes two months after her older brother Sonny's birthday.

In May, the 11-year-old requested a cake of himself wearing futuristic armour with weapons and a large sword. He wanted his mini-me to stand heroically with one foot on top a small cave that had their cats inside it. And the finishing touch? The figurine must, of course, be able to chop the sword into a large number 11.

As the father-of-two said when announcing the brief, "the customer is always right".

With so many elements to the cake, it seemed like it would be a repeat of the Rubix cube night, which saw Hamish unable to crawl into bed until sunrise.

But, as the comedian wrote on his Instagram stories, there was "no f—king around" this time.

The first step really started a few days ago, when he enlisted the help of Brickman from LEGO Masters to create a skeleton out of LEGO. Featuring a pull-chord mechanism, the figure could swing its arm in a dramatic chopping motion, just like the client (Sonny) had requested.

So, holding the skeleton in one hand, and a glass of whisky in the other, Hamish locked in for cake night.

Things started off badly.

"I think I made a mistake when I told him the dimensions," said the father-of-two about the skeleton.

"I just kind of guessed when I told him that high, that's massive. This is a big thing, and it's too late to change."

He has, however, faced bigger hurdles before. So he soldiered on.

The next step was making the sword. Using a very noisy angle grinder, Hamish cut a kitchen knife in half.

Hamish cutting the kitchen knife. Image: Instagram/@hamishblakeshotz

"Just telling Zo it's a cake mixer down here," the 43-year-old said on his Instagram stories, while his wife Zoë Foster-Blake presumably tried to sleep.

The knife, however, was too small to cut through the number 11. So Hamish tried again.

"I have destroyed a kitchen knife and if I were to cut a bigger one, that is a more valuable knife. Will my wife be angry at me? Yes. But no f—king around."

Grabbing some superglue, Hamish tried to attach the knife (sword) to the LEGO skeleton arm, gluing his own hand in the process.

At this point, Zoë, his sous chef, made a rare appearance to give her husband some nail polisher remover, which freed his hand from the glue.

Zo to the rescue with some nail polish remover. Image: Instagram/@hamishblakeshotz

With another sip of whisky, Hamish sculpted two number ones out of a circular cake (that he definitely baked himself and didn't purchase).

Then he realised the risk of building a cake around a large kitchen knife and decided to enlist some safety protocols, such as placing half a cherry tomato on the tip of the knife.

Hamish then began to build 'cake Sonny' out of icing.

"Rather than measure heaps of little bits, don't think, just do," Hamish said as he worked.

Hamish had finished the 'Sonny' part of the cake by 1am. Image: Instagram/@hamishblakeshotz

At this point, it was 11pm, and the comedian stopped for a whisky break.

"That old familiar feeling (is) sinking in," he said. "I might have said to my wife that we'd be done by midnight this time around. No f—king around."

"Top up sir?" asked his official 'cake night' cameraman Mike, as he poured more whisky in Hamish's glass.

As he got back to work (no f—king around!), the chaos continued.

"There's a cat eating cake behind you," Mike whispered.

Sure enough, Hamish's pet cat was on his kitchen counter taking a bite out of the cake.

Hamish jumped up and removed the furry interloper from the scene of the crime.

He got straight back to work.

Some slight interruptions when Hamish's cat decided to take a bite of the cake. Image: Instagram/@hamishblakeshotz

This is when he really locked in.

12:06am. A sip of whisky.

The face of 'cake Sonny' was complete.

12:52am. Another sip.

Hamish broke a pair of sunglasses to make a visor for 'cake Sonny'.

"This is genius sh-t," he said.

1:30am.

"I know we said no mucking around," Hamish said, before revealing he made a phallic shape out of the leftover icing.

"Is this just because it's 1:30 in the morning and we've had a few drinks, is it funny to leave this in the fridge for my wife?"

"Saturday banter," Mike confirmed, and Hamish put it in his fridge.

1:59am and disaster struck.

The two number ones that Hamish cut, without measuring, were too big for the cake. But the father-of-two was quick to enact a contingency plan.

The ones were way too big, but Hamish had a back up plan. Image: Instagram/@hamishblakeshotz

"We're going to pre-cut them and have a fishing wire on the day to pull them off," he said.

Then he realised he'd missed a very important part of the brief.

"When it's past 2:30am and you remember your son put two cats in the sci-fi scene, and those cats will not make themselves," Hamish wrote.

No f—king around!

He made the cats and by 3:03am he was done. Not a bad time for someone who once stayed up until 6am on 'cake night'.

"I officially pronounce this cake operational, ready to thwack, ready to cut the 11 in half," he said, before taking the safety tomato off the knife.

The final product! Image: Instagram/@hamishblakeshotz

"Barely 3 o'clock? We can go out!" he joked to Mike, with one final sip of whisky.

Ending on a sentimental note, Hamish shared a message for Sonny.

"Happy birthday to my favourite guy in the world. Forever. Love dad."

Until next time, cake lovers.

Feature Image: Instagram/@hamishblakeshotz.