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Catherine, Princess of Wales -

Looking fancy, the future royal was spotted attending the wedding of Hugh van Custem and Rose Astor in 2005 in Burford, England.

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Catherine, Princess of Wales -

Dressed in a total aughts look, Kate was spotted here with her father, Michael Middleton, prior to her graduation ceremony from the University of St Andrews.

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Catherine, Princess of Wales -

Kate graduated from the University of St Andrews in Scotland in 2005, with a degree in art history. She later held jobs in retail and marketing before becoming engaged to Prince William in November 2010.

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Catherine, Princess of Wales -

Seen here on a ski trip in Klosters, Switzerland, in 2005, Kate had been dating Prince William for four year at this point. The couple met as students at the University of St Andrews.

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Catherine, Princess of Wales -

Dressed in a classy blue shirt and brown blazer, here Kate Middleton attended the Cheltenham Horse Racing Festival in 2007 with Prince William.

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Princess Diana (1961-1997) -

The future Princess of Wales is pictured here during a summer holiday in 1971 in Itchenor, West Sussex, England. Her famous smile didn't change a bit!

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Princess Diana (1961-1997) -

Before her engagement to the then-Prince Charles, Lady Di worked as a teacher's assistant at a kindergarten in London. Rumors about her dating the prince had just started when this image was taken in 1980.

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Princess Diana (1961-1997) -

Diana's love for children was noticed early on when she worked at the kindergarten. As a royal, she became the patron of over 100 charities, working on issues concerning children, the disabled, and people with HIV/AIDS.

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Princess Diana (1961-1997) -

Caught off guard, Diana is pictured here outside her London apartment just days before her engagement to Charles was announced in 1980.

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Princess Grace of Monaco (1929-1982) -

Originally from Philadelphia, Grace Kelly started out as a model before making it big in Hollywood. She retired from acting at the age of 26 to marry Prince Rainier III of Monaco on April 18, 1956.

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Grace Princess Grace of Monaco (1929-1982) -

Before becoming a royal, the Hollywood star appeared in a number of films, such as 'Mogambo' (1953), 'The Country Girl' (1954), and 'To Catch a Thief' (1955).

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Princess Grace of Monaco (1929-1982) -

The beloved actress earned her first Oscar nomination in 1954 for Best Supporting Actress in 'Mogambo.' She finally took home a statue in 1955, winning for Best Actress in 'The Country Girl.'

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Meghan, Duchess of Sussex -

Before marrying Prince Harry, Meghan Markle graduated with a bachelor's degree in theater and international studies from Illinois' Northwestern University in 2003.

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Meghan, Duchess of Sussex -

Known for starring in 'Suits,' from 2011 to 2018, she had roles in several productions before making it big on the hit show. She's seen here sharing a laugh with co-star Gina Torres at an event for 'Suits.'

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Meghan, Duchess of Sussex -

Dressed casually and cool, the future duchess was spotted at the New Jersey Devils vs. New York Rangers game at Madison Square Garden in 2013.

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Meghan, Duchess of Sussex -

She was often spotted at different events with fellow celebrities. She's seen here with Nina Agdal, Shay Mitchell, and Chrissy Teigen at the DirecTV Beach Bowl game in 2014.

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Queen Letizia of Spain -

Before marrying into royalty, Queen Letizia of Spain worked as a journalist and news anchor in Madrid. It was during a work visit, in 2002 in Asturias, that she met the future King Felipe of Spain. The couple married in 2004.

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Sarah, Duchess of York -

Married to Prince Andrew from 1986 to 1996, Sarah Ferguson worked in public relations and publishing before joining the royal family. She's pictured here with Princess Diana at a polo match in 1983.

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Queen Silvia of Sweden -

The German-Brazilian queen met the king of Sweden while working as an educational host during the 1972 Summer Olympics in Munich. She's a trained interpreter and speaks six languages, including Swedish Sign Language.

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Queen Consort Camilla -

First linked with the then-Prince Charles in 1971, Camilla ended up marrying Andrew Parker Bowles in 1973. Educated in England, Switzerland, and France, Camilla worked as secretary for a variety of firms in London.

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Queen Consort Camilla -

Charles and Camilla were romantically involved during each of their first marriages. And after years of media attention and public scrutiny, they finally married in 2005.

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Queen Rania of Jordan -

Prior to becoming queen in 1999, the future royal worked in marketing at Apple Inc. in Amman. She has a degree in business administration from the American University in Cairo.

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Princess Charlene of Monaco -

Before marrying Prince Albert II of Monaco, Charlene was a professional swimmer who represented her native South Africa. She won three gold medals and a silver medal at the 1999 All-Africa Games, and later competed at the 2000 Summer Olympics.

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Prince Daniel of Sweden -

The future King of Sweden met Crown Princess Victoria while working as her personal trainer in 2001. The couple married in 2010.

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Sophie, Countess of Wessex -

Before marrying Prince Edward in 1999, Sophie had a successful career in public relations at London's Capital Radio. She even opened her own firm three years before joining the royal family.

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Sophie, Countess of Wessex -

Dressed to impress in true '90s attire, she was spotted here leaving work on her 30th birthday in 1995.

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Empress Masako -

Wife of Emperor Naruhito of Japan, Masako was educated at Harvard and Oxford, and had a prior career as a diplomat. Having to give up her freedom and independence, she was reluctant to marry the royal and only accepted on his third proposal.

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Queen Máxima of the Netherlands -

Pictured here attending an event in Norway in 2001, the Argentinian had a career in education and finance before marrying King Willem-Alexander in 2003.

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Mary, Crown Princess of Denmark -

Born and raised in Australia, the future queen has a degree in commerce and law from the University of Tasmania. She met Prince Frederik at a Sydney pub during the 2000 Summer Olympics.

Sources: (Harper's Bazaar) (Hello!)

See also: Royals: who had the most stunning wedding dress?

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