The Duchess of Cambridge has swapped the Royal Box for a low-key seat on the Wimbledon outer courts, as she lends her support to British wildcard player Harriet Dart.
The Duchess, who is patron of the All England Lawn Tennis and Croquet Club, will spend the day at Wimbledon meeting players and watching the second day of action.
Expected to sit in the centre court Royal Box as usual for the most high profile matches of the day, she surprised ticket-holders on Court 14 this morning to watch Dart play American Christina McHale.
She was accompanied by players Anne Keothavong and Katie Boulter, joined by a small number of staff and security in the ordinary seats in Wimbledon's outer courts.
The Duchess is a regular at Wimbledon, usually joined by members of both the Royal Family and the Middletons throughout the fortnight.
She has previously spoken of queuing up for tickets as a young woman, finally getting in late in the day to soak up the "special" atmosphere of Henman Hill and the ground courts.
The Duchess of Cambridge left Court 14 after watching British player Harriet Dart lose her first set.
Asked if she had enjoyed the tennis, she said: "Very much so."
The Duchess late took her seat in the royal box to watch Roger Federer play Lloyd Harris. She will also be touring the grounds, visiting a number of courts throughout the day.
A spokeswoman for the All England Club said: "We are delighted that the duchess in her capacity as Patron of the AELTC was keen to see the full breadth of The Championships and we were pleased to facilitate a visit to watch play on the outside courts and to watch practice at Aorangi Park."
Last year, the Duchess joined a tennis training session at a primary school in Mitcham, south London, and joked at the time how she was less "sporty" now she has children.
The youngsters at Bond Primary were receiving training sessions under the Wimbledon Junior Tennis Initiative - the outreach programme of the All England Club.
The Duchess told the children: "I love tennis, I think it's a great sport. I was really sporty when I was little, less so now that I've got lots of babies."
She has been a regular guest at Wimbledon since making her first visit as a member of the royal family in 2011.
Dart, 22, is ranked 182nd in the world and is a Wimbledon wildcard entry.
She went on to win the match in two hours and 19 minutes, saying afterwards that it was "pretty surreal" to have the duchess watching her play.
Asked if Kate's presence had affected her game she replied: "I don't think so. I don't even know at which point she left.
"Obviously I was just aware she was there at the start, as the chair umpire informed me."
The British number four added: "It's pretty cool to have royalty watching you. Such a privilege for me for her to get to see me play.
"Hopefully she'll come to many more of my matches," she said.
Speaking after the match's first set, Keothavong said of the duchess: "It's brilliant to have the opportunity to sit there and chat to her and talk about Fed cup and British players and I guess just everything and anything about tennis.
"She was very interested to hear what my thoughts were and what Katie's thoughts were on the game, she was clearly enjoying the tennis as well."
Keothavong said she had also discussed the remarkable win of 15-year-old Cori Gauff, known as Coco, over Venus Williams on Monday.
"Yes we spoke about that and she was very impressed with Coco's performance," she said.
The Fed Cup captain said it was a "real honour" for Dart to have the duchess watch her play.
She said: "Before they started the match actually I'm pretty sure I caught Harriet's eye looking over and smiling at the coin toss."
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