“This hair look takes her from day to night. It pairs perfectly with her day look of khaki trousers, and balances out her £2,500 pink Vampire’s Wife dress in the evening. An updo or big blow-dry would have been too much.
“Professional hair for the Duchess also means not looking like she’s spent too long on her hair, especially for charity meet and greets, as this can look insensitive.
“She needs to look put-together but also calm and relaxed, which is why this straight style is perfect for her royal duties,” Lily noted.
The heat is the most practical reason why Kate would choose to style her hair this way according to the expert.