She revealed last year that she wouldn't be celebrating her daughter Olympia's first birthday as she is a Jehovah's Witness.

But Serena Williams proved that a party any other time wasn't off the cards, showing her daughter with a barnyard and carnival themed event on Saturday.

The 37-year-old beauty took to Instagram Stories to share all the kids having fun while showing her 10.7 million followers around her backyard.

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She's a cool mom! Serena Williams proved she was a cool mom on Saturday, throwing her one-year-old daughter a huge party 'just because'

'This is so fun, Olympia,' she said.

'We wanted to just do something fun, because we don't do birthdays.'

Serena then showcased her man, Alex Ohanian's handy work - sharing the play equipment he'd put together.

Casual Saturday: 'We wanted to just do something fun, because we don't do birthdays'

Forgot to finish the slide? Serena then showcased her man, Alex Ohanian's handy work - sharing the play equipment he'd put together

However, he may have forgotten the most important component of the slide house - attaching the actual slide, which laid flat on the grass.

'Oh, boy, is that a slippery slide or is that...let me check that it's permanent.'

Throughout the home event was also a little sweet treat set up for the guests, named 'Olympia's Candy Shop.'

Sweet like candy: Throughout the home event was also a little sweet treat set up for the guests, named 'Olympia's Candy Shop'

Delicious: The one-year-old's candy shop featured an array of cakes, cupcakes, and sweets all amongst a giant teddy bear sitting in a red car

The one-year-old's candy shop featured an array of cakes, cupcakes, and sweets all amongst a giant teddy bear sitting in a red car.

Alexis also took to social media to share an adorable shot of his daughter seemingly enjoying her party.

'Ok, we'll get some chickens & ducks,' he captioned.

Something for everyone: All the treats were set up with easy access for all the guests

Everyone's having a blast! The 37-year-old beauty took to Instagram Stories to share all the kids having fun while showing her 10.7 million followers around her backyard

Following her faith: Serena's extravaganza comes after she revealed last year that Olympia wouldn't be getting a first birthday party as she was part of the Jehovah's Witness religion

Serena's extravaganza comes after she revealed last year that Olympia wouldn't be getting a first birthday party as she was part of the Jehovah's Witness religion.

According to Jehovah’s Witnesses official website, Jehovah’s Witnesses see Jesus as the son of God and savior, but do not believe he’s the 'Almighty God.'

Furthermore, members of the faith reportedly don't vote, remain politically neutral and do not celebrate holidays such as Christmas, Easter, birthdays, Valentine's Day or Halloween.

Serena spent Valentine's Day enjoying a 'Galentine's Day' instead with some of her girlfriends.

Alexis isn't part of the faith but has continued to support her wishes.