Tennis whites not in vogue this season? Anna Wintour chooses a bright red dress for day one of the US Open

  • Anna, 64, looked chic in red dress as she arrived at court
  • Watched Andy Murray and Maria Sharapova claim victories
  • Huge tennis fan and reportedly plays herself every morning
  • Recently nominated Roger Federer for ALS ice bucket challenge  

As the editor in chief of fashion bible Vogue it is no surprise that Anna Wintour is bang up-to-date on the season's biggest trends.

The magazine editor embraced the hottest colour of the summer as she attended day one of the U.S. Open wearing a scarlet dress to the USTA Billie Jean King National Tennis Center.

The 64-year-old tennis fan was incredibly chic in the flared midi dress, which she teamed with nude Manolo Blahnik shoes, statement jewels and her trademark coiffed bob.

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Lady in red: Anna Wintour wore the hottest colour of the season as she attended day one of the U.S. Open at the USTA Billie Jean King National Tennis Center

Lady in red: Anna Wintour wore the hottest colour of the season as she attended day one of the U.S. Open at the USTA Billie Jean King National Tennis Center

Anna, 64. who reportedly starts each day with a vigorous 5:45am tennis match at the Midtown Tennis Club in New York where hourly rates start at $80 (£48), will have seen Simona Halep, Maria Sharapova and Andy Murray claim victories on the court on Monday.

And there's no doubt she'll be keen to return today, if her schedule allows, to cheer on her good friend Roger Federer, who will take on Australia's Marinko Matosevic at the Arthur Ashe stadium this afternoon.

Avid fan: Anna, who is sometimes referred to simply as 'the bob', is a huge tennis fan and counts Roger Federer, who will play today, as one of her nearest and dearest

Avid fan: Anna, who is sometimes referred to simply as 'the bob', is a huge tennis fan and counts Roger Federer, who will play today, as one of her nearest and dearest

Looking good: Yesterday saw Ms Wintour take to the stands in a vibrant crimson dress and huge sunglasses

Pensive: Anna, who reportedly starts each day with a vigorous 5:45am tennis match at the Midtown Tennis Club where hourly rates start at $80 (£48), showed off her athletic figure in her fitted red dress

Fan: Although Federer is reportedly her favourite, she saw Andy Murray - who she also champions - in action

Victories: Anna will have seen Simona Halep, Maria Sharapova and Andy Murray claim victories on the courton Monday

Anna recently nominated the tennis pro to take part in the ALS Ice Bucket Challenge.

Fashion's most notorious ice queen surprised pretty much everyone by accepting her daughter Bee Shaffer's nomination to undergo the ALS ice bucket challenge.

'I Anna Wintour, with my family, accept my daughter Bee's ALS ice bucket challenge, and I nominate Roger Federer and Dominic West,' the steely editor states in the video, which was posted to the publication's Facebook page from her Hamptons home in Mastic.

Smart: The 64-year-old Vogue editor-in-chief looked chic in a red dress and wore her hair in its trademark perfectly styled bob

Smart: The 64-year-old Vogue editor-in-chief looked chic in a red dress and wore her hair in its trademark perfectly styled bob

Immaculately dressed as always, Ms Wintour's assembled family then proceeded to launch several huge buckets of ice over her where, in a rare move, she breaks her usual stoic demeanour and squeals as the freezing water drenches her famous bob.

Within an hour, the Vogue video had gained over 4,671 'likes' on the social media network, and countless outpourings of disbelief from the fashion industry.

On your marks: Surprising almost everyone, steely American Vogue editor Anna Wintour agreed to take on the ALS ice bucket challenge

On your marks: Surprising almost everyone, steely American Vogue editor Anna Wintour agreed to take on the ALS ice bucket challenge

Soaked: Ms Wintour's assembled family launched several huge buckets of ice over her, as she broke her usual stoic demeanor and squealed at the cold

Soaked: Ms Wintour's assembled family launched several huge buckets of ice over her, as she broke her usual stoic demeanor and squealed at the cold

Tennis tournament: Novak Djokovic, of Serbia, returns a shot to Diego Schwartzman, of Argentina, during the opening round of the U.S. Open tennis tournament Monday

Tennis tournament: Novak Djokovic, of Serbia, returns a shot to Diego Schwartzman, of Argentina, during the opening round of the U.S. Open tennis tournament Monday

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