1 of 7
The first British royal to have her maternity style immortalized in a formal portrait, Princess Charlotte of Wales ditched the uncomfortable corsets of her day in favor of an empire-line, puff-sleeve maternity gown in 1817.
2 of 7
THE QUEEN MOTHER
Simple tunic-style flapper dresses were all the rage in 1926, when the Duchess of York – wife of the future King George VI – gave birth to the little girl who would become Queen Elizabeth II. Busy prints and a loose-fitting cut made the simple flapper dress the perfect maternity and postpartum cover-up.
3 of 7
QUEEN ELIZABETH II
It was business as usual for Queen Elizabeth II during her fourth pregnancy (with Prince Edward) in 1964. Keen to maintain her official royal duties and disguise her eight-month baby bump, the Queen looked ladylike in a discreet bracelet-sleeve cocoon-style topcoat.
4 of 7
The Queen's only daughter, Princess Anne, rocked a seriously '70s floral frock, complete with a prim pussy-bow collar, for a public appearance in 1977 while five months pregnant with her first child, Peter Philips. For her second pregnancy (with daughter Zara) four years later, the princess upped the style ante in an elegant a cream cape and eye-catching print blouse with a matching head scarf.
5 of 7
Less than a year after marrying Prince Charles, the 21-year-old princess was still finding her fashion footing, stepping out in a loose-fitting scarlet empire-waist evening gown and a billowing polka-dot smock while pregnant with her firstborn, Prince William, in 1982.
6 of 7
Pregnant with Princess Beatrice in June 1988, the Duchess of York took her maternity style cue from her royal sister-in-law, Princess Diana, when she attended a ballet in a puff-sleeve scarlet gown, which gave the unfortunate impression she was more than seven months pregnant at the time. By 1990, the Duchess, pregnant with Princess Eugenie, added the era's ubiquitous pinstripe power suit to her formal maternity wardrobe.
7 of 7
Days after debuting a new look at the Nov. 27 opening of the Treasures at the Natural History Museum in London, the stylish Duchess shares even bigger news: She and husband Prince William are expecting their first child! "Their Royal Highnesses The Duke and Duchess of Cambridge are very pleased to announce that The Duchess of Cambridge is expecting a baby," read a statement released Monday from the Palace.
ICYMI: All the Best Moments From Last Night’s Oscars, Plus Your Favorite Red Carpet Looks
Naomi Watts and Nicole Kidman Reunite, Plus Amy Adams, Kate Beckinsale & More
How Emma Stone Left Home at 14, Completed 'Project Hollywood' and Won Her First Oscar
Clark Gregg Remembers His Agents of S.H.I.E.L.D. Costar Bill Paxton: 'He Was like a Brother to Me'
How Mahershala Ali Overcame a Difficult Childhood, Found Islam and Won an Oscar