Holly Willoughby had a cheeky accessory to complete her Ladies Day look as she joined a slew of stars for a day at the races at Royal Ascot on Thursday.The presenter, 45, graced the track in an elegant all-white look, which consisted of a pleated skirt and wrap-over jacket dress from SIMKHAI.During her day out, Holly showed off her phone case which featured the lewd phrase ‘You’re doing your f*****g best.’ She added all-white accessories including an elegant wide-brimmed hat from Jane Taylor London and a £750 Aspinal midi Mayfair bag, finishing her look with a pop of ruby red lipstick.’Off to Ascot officially here for the horses, unofficially here for the champagne and cake’, Holly captioned her photo.Some of the celeb attendees will join society names in the Royal Enclosure – the most exclusive area of the racecourse, which has its own strict dress code. Holly Willoughby had a cheeky accessory to complete her Ladies Day look as she joined a slew of stars for a day at the races at Royal Ascot on Thursday The presenter graced the track in an elegant all-white look, which consisted of a pleated skirt and wrap-over jacket dress from SIMKHAIWhile no dress code rules apply in the Windsor Enclosure, although the majority of guests choose to dress up regardless, a strict dress code operates across the Royal and Queen Anne Enclosures. Ladies must wear ‘a dress or skirt falling just above the knee or longer’ and ‘shoulder straps that are a minimum width of 1 inch / 2.5cm,’ along with ‘a hat or headpiece with a solid base of four inches in diameter.”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.’Strapless, off-the-shoulder and one-shoulder items are also banned in the Royal and Queen Anne Enclosures.Shorts of any kind are not permitted. But having been included in the dress code since 1971, trouser suits remain a popular choice – although they mustn’t be mismatched.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.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. During her day out, Holly showed off her phone case which featured the lewd phrase ‘You’re doing your f*****g best’ She added all-white accessories including an elegant wide-brimmed hat from Jane Taylor London and a £750 Aspinal midi Mayfair bagRacegoers were joined in the Thursday sunshine by several senior members of the Royal Family, who made their appearance at 2pm for the carriage procession. Meanwhile, Holly teased an exciting new project on Instagram on Monday as she geared up for a career comeback.The former This Morning host shared stunning selfies while cycling on a Lime Bike in London, revealing she had been to a ‘brilliant meeting’ about a ‘really exciting’ new project.Holly, who has recently been more active on social media, is said to have distanced herself from ITV in a bid to tackle the digital industry.She wrote: ‘Found a patch of sun in between the rain… good old London weather!’Just had a brilliant meeting about a project I’m really excited about… things are happening at quite the pace! Can’t wait to bring it to life and share it with you’.Holly has been far more active on social media of late, sharing snaps from recent holidays and giving fans a glimpse into her enviable wardrobe.Certainly, an increased social media presence is crucial given Holly’s plan to move on from traditional TV and harness the power of online.The Daily Mail’s Katie Hind revealed Holly’s new plan. The TV star is working on a new digital project, which will involve both producing and presenting her own show to be streamed online.