An etiquette expert has given his verdict on the chicest high society birthday occasions - following a string of celebrations, including Meghan Markle's 45th birthday. 'When I was growing up, milestone birthdays were 18, 21, 50, and 60,' said former royal butler Julius Smith. 'There is absolutely nothing wrong with dancing in your kitchen, wearing a playful tiara or enjoying a birthday at home with your family,' Julius explained. Eugenie NiarchosShipping heiress Eugenie Niarchos's Greek birthday party was 'centred on people, rather than presentation', said JuliusShipping heiress Eugenie Niarchos's Greek birthday party was 'centred on people, rather than presentation', said Julius. A celebrity guest list, expensive bubbly, and high-end catering are all key to a high society soiree, but 'the best birthday celebrations allow people to put their phones away'.