Serena Williams has shown a glimpse of her life post-retirement and joked that she is now a "stay at home mum."

The tennis legend played her final professional match earlier this month when she faced Ajla Tomljanović in the third round of the US Open.

Now, she embarks on the next chapter in her life, which will see her focus on her family.

Williams posted an update on Twitter on Monday to mark a big moment in her daughter Olympia's life.

"Ok first day of Kindergarten," the 23-time Grand Slam champion wrote, along with the hashtags #stayathomemom and #workingmom.

Of course, despite Williams calling time on her tennis career, she is still very much involved in her other business ventures as well as being a mother to Olympia.

When she announced her retirement in her emotional write up, she worded it as she would be "evolving away" from tennis in order to focus on other aspects of her life.

The main focus being on her family. However, despite making her decision, she admitted it was a seriously difficult one to make, and one that she felt she never would have needed to if she wasn't a woman.

NEW YORK, NEW YORK - AUGUST 29: Serena Williams of the United States celebrates against Danka Kovinic of Montenegro during the Women's Singles First Round on Day One of the 2022 US Open at USTA Billie Jean King National Tennis Center on August 29, 2022 in the Flushing neighborhood of the Queens borough of New York City. (Photo by Elsa/Getty Images)

"Believe me, I never wanted to have to choose between tennis and a family. I don’t think it’s fair," she said in her feature for Vogue.

"If I were a guy, I wouldn’t be writing this because I’d be out there playing and winning while my wife was doing the physical labour of expanding our family. Maybe I’d be more of a Tom Brady if I had that opportunity.

"Don’t get me wrong: I love being a woman, and I loved every second of being pregnant with Olympia.

"I was one of those annoying women who adored being pregnant and was working until the day I had to report to the hospital — although things got super complicated on the other side.

"And I almost did do the impossible: A lot of people don’t realise that I was two months pregnant when I won the Australian Open in 2017. But I’m turning 41 this month, and something’s got to give."

AUCKLAND, NEW ZEALAND - JANUARY 12: Serena Williams of the USA celebrates with daughter Alexis Olympia after winning the final match against Jessica Pegula of USA at ASB Tennis Centre on January 12, 2020 in Auckland, New Zealand. (Photo by Hannah Peters/Getty Images)

Since giving birth to her daughter in September 2017, Olympia has been present at many of Williams' tennis matches.

The two even featured in an adorable video teasing Williams' return to the court following a long period of absence due to injury.

The clip showed the former world number one preparing to serve during a practise session, only for her to realise her hitting partner is her Olympia, who is shown grinning and wearing the same gear as her mum, while holding a tiny racquet.

The iconic mother and daughter duo have made headlines on numerous occasions in the past as they've sported matching outfits, including their attire on the red carpet for the premiere of ‘King Richard’.

Olympia is still just five years of age but with one of the greatest athletes in the world as her mother, could she also be destined for a career on the court?