The reinvention of Sarah Brown

1995: Sarah Macaulay with Julia Hobsbawm, her partner at their PR firm Hobsbawm Macaulay Communications Photograph: Lawrence Cendrowicz/PR

1998: With her boyfriend Gordon Brown at that year's Labour conference in Brighton, shortly after their relationship became public knowledge Photograph: Martin Argles

2000: On their wedding day in North Queensferry, Scotland Photograph: Murdo Macleod

2000: Sarah Brown applauding after a speech by her husband, then the chancellor of the exchequer, at the Labour conference in the autumn following their marriage Photograph: Chris Ison/PA

2006: The Browns with their second son, James Fraser Brown, outside Edinburgh Royal Infirmary Photograph: David Cheskin/PA

2007: Outside 10 Downing Street on Gordon Brown's first day as prime minister Photograph: Peter Macdiarmid/Getty

2008: Speaking to a resident in Cardenden, canvassing support ahead of the Glenrothes byelection Photograph: Russel Cheyne/Reuters

2008: Introducing her husband in a well-received speech before his address to the Labour conference Photograph: Martin Argles/Guardian

2008: Sarah Brown and Princess Eugenie during the Fashion for Relief show during London Fashion Week at the BFC Tent, Natural History Museum Photograph: Yui Mok/PA

2008: French first lady Carla Bruni-Sarkozy with Sarah Brown outside No 10 Photograph: Martin Argles

2009: Pouring a cup of tea with Michelle Obama during a visit to Maggie's Cancer Caring Centre in London Photograph: Reuters

2009: Brown and Obama walk through the Downing Street gardens Photograph: Reuters

2009: @SarahBrown10 defends the NHS on the social networking site Twitter Photograph: PA

2009: Sitting next to Irish prime minister Brian Cowen at the funeral of Edward Kennedy in Boston Photograph: Brian Snyder/Reuters

2009: Speaking at a dinner in New York held by Rania Al Abdullah, Wendi Murdoch and Indra Nooyi Photograph: Amy Sussman/Getty Images

2009: Designer Ozwald Boateng adjusts Gordon's tie as Sarah watches, during a London Fashion Week reception at Downing Street Photograph: Reuters

At Glastonbury festival 2009 with Naomi Campbell, campaigning with the White Ribbon Alliance for improved maternity care for women in the third world Photograph: Katherine Rose/Observer

2009: Barack and Michelle Obama welcome Sarah and Gordon Brown to the G20 dinner at the Phipps Conservatory in Pittsburgh Photograph: Jewel Samad/AFP/Getty Images

2009: Sarah Brown speaks to president of Chile, Michelle Bachelet, at a meeting during the 64th United Nations general assembly Photograph: Hiroko Masuike/Getty Images

2009: Wendy Murdoch, Sarah Brown, Queen Rania of Jordan, Nicole Kidman, Liya Kebede and Indra Nooyi attend the Important Dinner for Women 4, to bring attention to maternal mortality in New York Photograph: Jennifer Graylock/AP

2009: Sarah Brown and Geri Halliwell attend the 4th Important Dinner for Women Photograph: Amy Sussman/Getty Images