We've seen several generations of royals introduce their babies to the world, from Princess Diana giving birth to William and Harry, to the Duchess of Cambridge welcoming George, Charlotte and Louis.
READ: 10 most beautiful photographs of radiant new royal mums with their newborns
While we patiently wait for the next royal pregnancy announcement (will it be Princess Eugenie or Duchess Meghan perhaps?), we take a look back at photos of the Queen, the Countess of Wessex and more royal mothers on some of their last outings before they gave birth.
Keep scrolling to see more blossoming baby bumps...
Princess Beatrice and her daughter Sienna
The eldest daughter of Prince Andrew and Sarah Ferguson looked stunning in her polka dot dress at the Wimbledon Tennis Championships in 2021 when she was expecting her first baby.
The Princess and her husband Edoardo Mapelli-Mozzi welcomed their baby girl Sienna Elizabeth two months later on 18 September.
Duchess Kate and her first son Prince George
Royal fans were absolutely over the moon when Kate Middleton announced her first pregnancy in December 2012. The Duchess looked radiant in powder pink during her last public appearance at the annual Trooping the Colour ceremony in June 2013. Just over a month later, on 22 July 2013, the newlyweds welcomed little Prince George into the world.
Zara Tindall and her first daughter Mia
Zara and Mike Tindall welcomed their first child, Mia, on 17 January 2014. Zara kept her big bump warm in a woollen coat as she made one of her last public outings at the International at Cheltenham Racecourse on 13 December 2013 - just a month before the big day.
PHOTOS: 9 royal mothers before and after birth! Stunning photos of Duchess Kate, Countess Sophie & more
Princess Diana and her first son Prince William
This beautiful photograph of the Princess of Wales showed Diana looking radiant in a flowing, baby pink dress, which draped around her heavily pregnant bump. Diana was at a polo match with Prince Charles in June 1982. Later in that same month, the couple introduced their first son Prince William to the world.
Princess Anne and her daughter Zara
Princess Anne looked incredibly chic as she and her husband Mark Phillips attended a Great Somerford Church in Wiltshire with Mark's mother Anne Phillips on 6 May 1981. Looking at this photograph, the Princess looked totally at ease about giving birth to her daughter Zara just nine days later.
Duchess Kate and her daughter Princess Charlotte
Kate kept her little Princess in a stylish bump, wearing a Hobbs Dalmatian dress that she also favoured during her pregnancy with George. She looked beautiful as she attended one of her final engagements while pregnant, which was a visit to the Turner Contemporary art gallery in Margate on 11 March 2015. A couple of months later, on 2 May, Charlotte was born.
The Queen and her fourth child Prince Edward
How glamorous did the Queen look while six months pregnant with her fourth child, Prince Edward? Her Majesty looked happy and confident as she left Burlington House after seeing a preview of the winter exhibition 'Goya And His Times' at the Royal Academy - one of her final public appearances before Edward's arrival.
Princess Diana and her son Prince Harry
Diana gave a lesson on how to dress a seriously glamorous bump while six months pregnant. The Princess draped her bump in a silky Catherine Walker gown while at a film premiere in June 1984. Just three months later, she gave birth to her second son Prince Harry.
Duchess Meghan and her son Archie
Nearly 35 years later, Harry welcomed his own child with Meghan in May 2019. The Duchess' bump looked magnificent as she attended an International Women's Day panel discussion in March 2019 wearing a bold black and white mini dress by Reiss, which has become one of her most memorable looks to date!
The Countess of Wessex and her daughter Lady Louise Windsor
Sophie opened Childline's New Counselling Centre and offices on her final outing on 6 November before giving birth to Lady Louise Windsor just two days later. Yep, two! How amazing did she look?
RELATED: Royal ladies who gave birth over the age of 35: Kate Middleton, Sophie Wessex & more
Zara Tindall and her daughter Lena
Zara and Mike Tindall looked very loved-up as they prepared to welcome their second daughter Lena! Pictured at Prince Harry and Meghan Markle's royal wedding in May 2018, just weeks before she gave birth in June, the royal showed off her baby bump in a teal coat dress with pretty black embroidery.
The Duchess of York and her first daughter Princess Beatrice
Sarah Ferguson stayed comfortable yet chic in a polka dot dress paired with flat shoes at a polo match, while heavily pregnant with her first baby on 10 July 1988. She welcomed her first daughter, Princess Beatrice, just under a month later on 8 August.
Duchess Kate and her son Prince Louis
The Duchess once more made being heavily pregnant look like a breeze as she attended the Commonwealth Big Lunch at St Luke's Community Centre on 22 March. She even managed to walk around in heels! Kate gave birth to her third child, Prince Louis, a month later on 23 April.
MORE: The Queen's birth stories of her children Charles, Anne, Andrew and Edward
The Duchess of York and Princess Eugenie
Sarah Ferguson proved that even royals love comfortable maternity clothes! During her second pregnancy with Princess Eugenie, she attended a ski championship and opted for white trousers, an oversized white top that skimmed over her bump and a cosy tan jacket to keep warm. Just weeks later, Eugenie was born on 23 March 1990.
The Duchess of Sussex and her first daughter
The Duke and Duchess of Sussex revealed in an interview with Oprah Winfrey that their second born is to be a girl. Meghan and Harry announced they are overjoyed to be welcoming their daughter, who is due in the late spring, any moment now!
Donning a stunning silk floral dress for a rare virtual appearance at a music concert in May, heavily pregnant Meghan styled her bump effortlessly and looked glamorous as ever for the public engagement.
Make sure you never miss a ROYAL story! Sign up to our newsletter to get all of our celebrity, royal and lifestyle news delivered directly to your inbox.