Royal Ascot heats up! The sun shines on Ladies Day as UK prepares for 'heat dome' to bake nation in six-day heatwave

By ALANAH KHOSLA, SENIOR LIFESTYLE REPORTER Glamorous racegoers have put their best fashion foot forward upon arriving at Royal Ascot in the sunshine for Ladies Day today - as the UK braces for the start of a six-day heatwave. Bright summer dresses, vibrant frocks and extravagant headpieces were all on display as thousands of revellers descended on the Berkshire racecourse this morning. White crisp frocks and pastel ensembles appeared to be the theme of the day for many as they dressed for the scorching British weather, with temperatures expected to rise to 30C during the heatwave, which starts today. A static area of high pressure building across mainland Europe – known as a 'heat dome' – is resulting in increasingly warm and humid air for southern England. London, the East, South East and South West regions were placed under the amber alert, while the Midlands faces a yellow warning. There are no alerts for the North. These warnings run from midday today until next Tuesday at 8pm – although the Met Office forecast currently suggests the heatwave could last until at least Wednesday. The amber alert states that the areas covered are likely to see 'a rise in deaths, particularly among those aged 65 and over or with health conditions', while 'significant impacts are likely across health and social care services' due to the heat. At Royal Ascot, temperatures reached around 22C this morning and are expected to reach 27C by the afternoon. Racegoers will be joined in the sunshine by several senior members of the Royal Family, who will make their appearance at 2pm for the carriage procession. Hat's how you do Ladies Day! The third day of Royal Ascot is in full swing - and glamorous attendees have dressed to the nines  One guest decided to stand out from the crowd with a hot pink belted dress and eye-catching bow fascinator in a matching shade, while another opted for a one-sleeved pale pink frock.  Royal Ascot, the jewel in the crown of the UK racing calendar, started on Tuesday with the Queen Anne Stakes and will run until Saturday. Radiant guests turned the racecourse into a sea of colourful ensembles as they stepped out for the prestigious occasion. Those trying to command attention amongst the crowd of thousands opted for unique garments - including a Spanish-inspired bright red dress - but her extra-large feather hat stole the show. The wacky, gravity-defying style of hats is permitted in most areas at Ascot, except in the Royal Enclosure.  'A hat or headpiece with a solid base of four inches in diameter is mandatory in the Royal Enclosure,' explained the Royal Ascot website. 'Fascinators are not permitted. Novelty hats (i.e. ones which are excessively oversized, or are promoting or marketing any product or brand) are not permitted.' The event's official lookbook this year was curated by menswear specialist Daniel Fletcher, who has previously designed for the likes of Louis Vuitton, JW Anderson and Victoria Beckham. Famous faces! Lady Victoria Hervey (left) and Georgia Toffolo (right) posed for cameras at the Berkshire racecourse Twinning moment! Two racegoers arrived in matching frocks for the third day of the annual event Think pink! Glamorous racegoers have upped the style stakes on Ladies Day of Royal Ascot today Bringing the sunshine! A racegoer stunned in a butter yellow dress and a contrasting black fascinator Hats off! One woman sported a sparkling red dress today - but it was her extravagant headpiece that stole the show Pretty in pink! A beaming racegoer opted for a stunning dress on the third day of the prestigious event Here come the girls! Two attendees, dressed to the nines in elegant frocks, arrived linking arms Flower power! Racegoer Tamara Holmgren smiled as she arrives on the third day of the Royal Ascot in a floral headpiece Touch ups! One attendee added a touch of pink lipstick to complete her look on Thursday morning Lady in red! One woman drew inspiration from the colour of the year - bright tomato - when deciding her outfit today The guide outlines the dos and don'ts of dressing for the annual event, and for the first time ever, it's also determined the colour of the year - bright tomato.  The festival was founded by Queen Anne in 1711 after she declared Ascot ideal for 'horses fit for kings' and has today become a major social event as well as a sporting attraction.  Yesterday, the Princess of Wales brought the sunshine to Royal Ascot after a two-year absence as she arrived at the races wearing a bright yellow dress. Catherine, 44, joined the Royal Family's carriage procession alongside her husband, the Prince of Wales, as they travelled behind the King and Queen. The future Queen's £1,095 daffodil yellow outfit was from the label Roksanda, and Catherine paired it with a hat from Jane Taylor Millinery, while Prince William pinned yellow flowers to his lapel to complement his wife's ensemble. Yesterday marked the third time Catherine has donned the frock, having previously worn it on a State Visit to Jamaica and at the Wimbledon championships in 2022. The mother of three carried an ivory satin clutch from Anya Hindmarch, believed to be worth £395, and rewore her cream-coloured Gianvito Rossi suede pumps. Catherine's outfit also included sentimental details, such as the late Queen Elizabeth's gorgeous diamond chandelier earrings and Princess Diana's three-strand pearl necklace. Blooming lovely! One lady completed her ensemble with a floral fascinator in shades of orange and peach Hats off! One woman ensured she stood out from the crowd with a large feathered headpiece Heart eyes, literally! Racegoer Anna Gilder added a fun pair of heart-shaped sunglasses to her ensemble Radiant in red! Racegoers showcased their stylish red dresses  Looking good! Three ladies in dresses showed off their sensational ensembles as they entered the event Strike a pose! One glamorous attendee posed for the camera on the third day of the event Blooming lovely! Revellers sported a range of impressive hats with floral embellishments Bright and bold! A racegoer showcased a stylish pink suit and contrasting yellow handbag Hat's how you do Ladies Day! One woman looked elegant in a blush pink dress and matching fascinator  Instagram ready! One group of friends looked picture perfect as they posed for a selfie   Bright and beautiful! A group of glamorous ladies donned bold shades of green, yellow and pink Hat's impressive! Anastasia Bailey sported a rose petal hat on day three of Royal Ascot Pretty in pastels! Two friends stood for a photograph while donning pastel yellow and pink dresses Twirling into the good times! Racegoers pulled out all the sartorial stops for Ladies Day on Thursday Suited up! One woman looked put on a fashion forward display in a trendy three-piece suit and a pink fascinator Royal Ascot's colour of the year - bright tomato - was noted by this group of glamorous women The princess's mother, Carole Middleton, also made the case for repurposed fashion as she arrived at Ascot yesterday wearing the same dress she wore to Pippa Middleton's wedding nine years ago. And it seems attendees have taken note, with today's turnout wearing a variety of show-stopping outfits as they descended on Ascot for a day of equestrian fun. Floral prints, polka dots and vibrant outfits were the order of the day for many, while others looked effortlessly elegant in crisp white frocks. Royal Ascot, the jewel in the crown of the UK racing calendar, started on Tuesday with the Queen Anne Stakes and The King Charles III Stakes and will run until Saturday. Carole, 71, cut a stylish figure in the blush pink Catherine Walker coat dress, which she paired with a matching hat and shoes, both from Emmy London, as Carole happily posed for pictures alongside her daughter-in-law Alizee Thevenet.  Racegoers were delighted to see the princess riding in the second royal carriage alongside Prince William, 43, after she was forced to skip the event in 2025 while trying to 'find the right balance' after her cancer treatment. The last time Catherine attended Ascot was in 2023, when the future Queen famously wore a 'tomato red' Alexander McQueen dress - proving Kate is always one step ahead of fashion trends. On Tuesday afternoon, the new Mrs Peter Phillips made her official debut as a member of the Royal Family, joining her husband in the traditional carriage procession at Royal Ascot. Before the racing got underway, all eyes were on the newlyweds, who tied the knot during an 'intimate' ceremony in the Cotswolds less than two weeks ago, as they entered the Ascot paddock in bright sunshine. Harriet Sperling, 45, and her new husband Peter Phillips arrived in the second royal carriage, with King Charles and Queen Camilla leading the procession in the first, on the opening day of the prestigious British racing event. The comments below have not been moderated. The views expressed in the contents above are those of our users and do not necessarily reflect the views of MailOnline. By posting your comment you agree to our house rules. Do you want to automatically post your MailOnline comments to your Facebook Timeline? Your comment will be posted to MailOnline as usual. Do you want to automatically post your MailOnline comments to your Facebook Timeline? Your comment will be posted to MailOnline as usual We will automatically post your comment and a link to the news story to your Facebook timeline at the same time it is posted on MailOnline. To do this we will link your MailOnline account with your Facebook account. We’ll ask you to confirm this for your first post to Facebook. You can choose on each post whether you would like it to be posted to Facebook. Your details from Facebook will be used to provide you with tailored content, marketing and ads in line with our Privacy Policy.