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Pippa Middleton's Style Evolution Through The Years

Kate Middleton, aka Catherine, Duchess of Cambridge is known for her sense of style. But her little sister, Pippa Middleton, has made her mark on the fashion world as well.

As maid of honor at her sister’s wedding to Prince William in 2011, she made headlines with her figure-hugging, cowl-neck gown designed by Sarah Burton of Alexander McQueen. She has also been a regular chic fixture at Wimbledon each summer and showed off her lovely maternity style in 2018 while pregnant with Arthur, her first child with husband James Matthews.

In honor of her birthday on Sunday, we’ve rounded up photos of the royal sister’s fashion moments. Keep scrolling for Pippa Middleton’s style evolution through the years.

2007

The Middleton sisters attend a book launch party for "The Young Stalin" by Simon Sebag Montefiore on May 14, 2007, in London.
The Middleton sisters attend a book launch party for "The Young Stalin" by Simon Sebag Montefiore on May 14, 2007, in London.

2007

Pippa Middleton leaves the London club Mahiki on July 12, 2007.
Pippa Middleton leaves the London club Mahiki on July 12, 2007.

2007

Middleton attends a book launch party for "Time to Reflect" by photographer Alistair Morrison at Bluebird in London on Nov. 28, 2007.
Middleton attends a book launch party for "Time to Reflect" by photographer Alistair Morrison at Bluebird in London on Nov. 28, 2007.

2008

Middleton attends the Sotheby's Summer Party at Sotheby's Bond Street in London on June 19, 2008.
Middleton attends the Sotheby's Summer Party at Sotheby's Bond Street in London on June 19, 2008.

2008

Middleton smiles at The Royal Parks Charity Gala at the Serpentine Lido in London's Hyde Park on Sept. 10, 2008.
Middleton smiles at The Royal Parks Charity Gala at the Serpentine Lido in London's Hyde Park on Sept. 10, 2008.

2008

Middleton arrives at the End of Summer Ball at Berkeley Square on Sept. 25, 2008, in London.
Middleton arrives at the End of Summer Ball at Berkeley Square on Sept. 25, 2008, in London.

2008

Middleton attends the 10th anniversary party of Claridge's Bar in London on Nov. 11, 2008.
Middleton attends the 10th anniversary party of Claridge's Bar in London on Nov. 11, 2008.

2009

Middleton poses at the Jaeger-LeCoultre Polo Charity Cup at Ham Polo Club in Richmond, London, on June 12, 2009.
Middleton poses at the Jaeger-LeCoultre Polo Charity Cup at Ham Polo Club in Richmond, London, on June 12, 2009.

2009

Middleton smiles at the Tatler 300th Anniversary Party at Lancaster House in London on Oct. 14, 2009.
Middleton smiles at the Tatler 300th Anniversary Party at Lancaster House in London on Oct. 14, 2009.

2009

Middleton attends a book launch party for UNICEF's "Snowman in Africa," featuring illustrations by Michael Roberts, on Dec. 1, 2009, in London.
Middleton attends a book launch party for UNICEF's "Snowman in Africa," featuring illustrations by Michael Roberts, on Dec. 1, 2009, in London.

2010

Middleton poses at The Reuben Foundation & Virgin Unite Haiti Fundraiser at Altitude 360 in London on May 26, 2010.
Middleton poses at The Reuben Foundation & Virgin Unite Haiti Fundraiser at Altitude 360 in London on May 26, 2010.

2010

Middleton skates at Somerset House during a London event presented by Tiffany & Co. on Nov. 22, 2010.
Middleton skates at Somerset House during a London event presented by Tiffany & Co. on Nov. 22, 2010.

2011

Middleton arrives at the wedding of Lady Katie Percy and Patrick Valentine at St. Michael's Church in Alnwick, Northumberland, on Feb. 26, 2011.
Middleton arrives at the wedding of Lady Katie Percy and Patrick Valentine at St. Michael's Church in Alnwick, Northumberland, on Feb. 26, 2011.

2011

Middleton arrives at London's Goring Hotel with her mother, Carole, and sister, Kate, on April 28, 2011, the day before the royal wedding.
Middleton arrives at London's Goring Hotel with her mother, Carole, and sister, Kate, on April 28, 2011, the day before the royal wedding.

2011

Middleton serves as maid of honor during her sister Kate's wedding to Prince William at Westminster Abbey on April 29, 2011.
Middleton serves as maid of honor during her sister Kate's wedding to Prince William at Westminster Abbey on April 29, 2011.

2011

Carole, James, Michael and Pippa Middleton depart the Goring Hotel the day after Kate's wedding on April 30, 2011.
Carole, James, Michael and Pippa Middleton depart the Goring Hotel the day after Kate's wedding on April 30, 2011.

2011

Middleton leaves an office in Kensington, London, on May 19, 2011.
Middleton leaves an office in Kensington, London, on May 19, 2011.

2011

Middleton walks in West London on May 20, 2011.
Middleton walks in West London on May 20, 2011.

2011

The Middleton sisters attend the wedding of Sam Waley-Cohen and Annabel Ballin at St. Michael and All Angels Church on June 11, 2011, in Lambourn.
The Middleton sisters attend the wedding of Sam Waley-Cohen and Annabel Ballin at St. Michael and All Angels Church on June 11, 2011, in Lambourn.

2011

Middleton shops on July 15, 2011, in London.
Middleton shops on July 15, 2011, in London.

2011

Middleton shops in London on July 22, 2011.
Middleton shops in London on July 22, 2011.

2011

Middleton attends the Temperley London Show during London Fashion Week on Sept. 19, 2011.
Middleton attends the Temperley London Show during London Fashion Week on Sept. 19, 2011.

2011

Middleton walks in Kensington on Sept. 29, 2011.
Middleton walks in Kensington on Sept. 29, 2011.

2011

Middleton arrives at the Boodles Boxing Ball on Oct. 1, 2011, at Park Plaza Westminster Bridge Hotel in London.
Middleton arrives at the Boodles Boxing Ball on Oct. 1, 2011, at Park Plaza Westminster Bridge Hotel in London.

2011

Middleton poses at a charity event supporting Breakthrough Breast Cancer at Petersham Nurseries in Richmond on Oct. 13, 2011.
Middleton poses at a charity event supporting Breakthrough Breast Cancer at Petersham Nurseries in Richmond on Oct. 13, 2011.

2011

Middleton walks through South Kensington on Nov. 3, 2011.
Middleton walks through South Kensington on Nov. 3, 2011.

2012

Middleton arrives at her London office on Jan. 11, 2012.
Middleton arrives at her London office on Jan. 11, 2012.

2012

Middleton and her brother, James, smile from the Spirit of Chartwell during the Diamond Jubilee Thames River Pageant on June 3, 2012.
Middleton and her brother, James, smile from the Spirit of Chartwell during the Diamond Jubilee Thames River Pageant on June 3, 2012.

2012

Middleton arrives to watch the ladies' singles second-round match between Serena Williams and Melinda Czink on day four of Wimbledon on June 28, 2012.
Middleton arrives to watch the ladies' singles second-round match between Serena Williams and Melinda Czink on day four of Wimbledon on June 28, 2012.

2012

The Middleton sisters attend the men's singles final during day 13 of Wimbledon on July 8, 2012.
The Middleton sisters attend the men's singles final during day 13 of Wimbledon on July 8, 2012.

2012

Middleton arrives at the U.K. premiere of "Shadow Dancer" at the Cineworld Haymarket in London on Aug. 13, 2012. 
Middleton arrives at the U.K. premiere of "Shadow Dancer" at the Cineworld Haymarket in London on Aug. 13, 2012.

2012

Middleton walks in Manhattan on Sept. 4, 2012.
Middleton walks in Manhattan on Sept. 4, 2012.

2012

Middleton walks in New York City's Upper East Side on Sept. 5, 2012.
Middleton walks in New York City's Upper East Side on Sept. 5, 2012.

2012

Middleton watches Tomas Berdych play Roger Federer in their U.S. Open men's singles quarterfinal match in Queens, New York, on Sept. 5, 2012.
Middleton watches Tomas Berdych play Roger Federer in their U.S. Open men's singles quarterfinal match in Queens, New York, on Sept. 5, 2012.

2012

Middleton arrives at The Frick Collection on Sept. 6, 2012, in New York.
Middleton arrives at The Frick Collection on Sept. 6, 2012, in New York.

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This article originally appeared on HuffPost and has been updated.