The main event at the Aintree festival every year is the Grand National, which always takes place on the Saturday of the meeting. This year, The Crabbie’s Grand National will run on Saturday 5 April, and will attract more than 600 million viewers who will watch it live on TV. But for people who prefer to mix their horse racing with fashion, then Ladies’ Day on Friday 4 April is the day to actually go to Aintree, if you have the chance. In the same vein as Ladies’ Day at Ascot, this is a day for the female visitors to the course to show off their finest outfits, hairstyles and…