Sporty Kate plays noughts and crosses with Love Island’s Zara McDermott as she dons sunshiney £359 LK Bennett blazer for visit to the Dame Kelly Holmes Trust

The Princess of Wales finished second best after taking on double Olympic champion Dame Kelly Holmes - at a game of bean-bag noughts and crosses. Kate Middleton, 41, who is known for her competitive streak, joined a team of pupils being supported by Dame Kelly's trust at its base in Bath, with the former sports star on the other team. Looking effortlessly elegant, the mother-of-three sported a £359 bright yellow blazer from LK Bennett, which she paired with a white t-shirt and matching trousers and £120 Veja trainers. Also present for the visit was Love Island star Zara McDermott who is one of the Shaping Us campaign champions - Kate's initiative to promote the importance of early years development. The children from St Katherine's School in Bristol are taking part in the On Track To Achieve programme, delivered by their athlete mentor and Paralympic gold medallist Liz Johnson. In bright summer sunshine on Tuesday, the opposing groups had to run forwards in turn and throw a bean-bag on to a grid on the ground. Kate did her best but Dame Kelly's team won twice. After the first victory, the track and field star held her arms aloft and admitted she is "slightly competitive". The princess joked: "You would never have guessed." The princess later sat down to chat to the pupils, all girls aged from 11-13, who spoke about their experiences at school, home life and the benefits of being mentored by a sports star. Away from the cameras, she answered questions about her life, telling them she had never thought about becoming a royal until she fell in love with William, according to one person present. Dame Kelly said: ‘They were just asking her about being a royal. Was it something that she wanted to do? And she said she had to learn. It’s a struggle to know that you can be accepted and fit in and you are still learning every day. ‘Doing public speaking isn’t a natural thing for lots of people is it? And she was saying she is still working that out but has to project. So you know again, she humanised everything. Not everyone is perfect.’ The Princess, 41, went to the Percy Community Centre in Bath to see the work that the Dame Kelly Holmes Trust, a charity set up by the athlete in 2008, does using sports stars as mentors to support young people to find the skills and confidence they need to succeed in education, work and life. It is an issue close to Kate’s heart and she spoke to the girls about her own path to becoming a Princess and helping her own children develop amid a nationwide mental health crisis among young people, a wave of anxiety and depression that has coincided with the rise of social media and smart phones. Dame Kelly hopes the visit, marking Mental Health Awareness Week, will lead to the Princess’s philanthropic Royal Foundation working closely with her trust around the country. The two women got on like a house on fire. ‘She was lovely,’ said Dame Kelly. ‘She said: ‘Ask me questions as well.’ ‘I asked her, I said, "You’ve got three children and do you see different traits in them?". She said: "Oh yes", and she said that’s the thing. It’s like learning how to handle the different traits and different needs and abilities even with three young children shows her the need to do it with masses of children.' Kate swept her hair into her favourite bouncy blowdry style for the engagement, and opted for a neutral makeup look. She added a touch of blusher to her cheeks and a sweep of eyeliner across her lids for the occasion. Meanwhile she kept her jewellery to a minimum, donning her £795 earrings from Emily Mortimer. The brand, which is a favourite of Kate's sister-in-law Meghan, describes the earrings online as featuring 'versatile' jewels which 'are the sparkliest of pavé diamonds.' The jewels are pear cut drops, which can be detached from the polished gold hoops surrounded by the sparkliest of pavé diamonds. Kate is known for her love of highly personal jewellery, but also often repeats pieces or opts for pieces from high street stores such as Accessorize. Meanwhile she has also long been a fan of the LK Bennett brand, first opting to wear the British label more than a decade ago. The yellow blazer is a new addition to her wardrobe, and is described by the British high street brand as 'part of a key suit in our spring collection'. An online description reads: 'The vibrant Mya blazer is in our Peggy Guggenheim-inspired bold and bright yellow. 'Crafted in Portugal from a classic tailoring fabric, it's a single-breasted style with a curved peak lapel, a single horn-effect button, front welt pockets and a beautiful tailored cut.