• A new exhibition looking at the fashions of three royals over four decades last century opens at Kensington Palace today. Fashion Rules features five rooms of dress displays with a focus on the fashions of Queen Elizabeth II in the 1950s, Princess Margaret in the 1960s and 1970s and Diana, Princess of Wales, in the 1980s. Twenty-one dresses are included in the display which explores how the royal women negotiated how to dress fashionably while observing the “rules” of the Royal Wardrobe and includes film footage and photography. The dresses include five of the Queen’s evening dresses – one of which is a gown fashioned for the Queen by Norman Hartnell in the colours of the flag of Pakistan, a full-length kaftan and matching turban of ivory sari silk worn by Princess Margaret while on the island of Mustique (on display for the first time), and, two Eighties dresses worn by Diana which have never before been displayed in the UK. Admission is included in entry price. For more, see www.hrp.org.uk/KensingtonPalace/. PICTURE: HRP/Newsteam.

• The Rolling Stones are back in Hyde Park this weekend as part of a summer of music in the Royal Park. The concert will take place almost 44 years to the day since the Stones first played the park and comes in the wake of their ’50 and Counting’ shows last year. Their first performance in the park – on 5th July, 1969 – saw the live debut of guitarist Mick Taylor and was a tribute to founding member Brian Jones who has died only two days before. For the full programme of Barclaycard presents British Summer Time Hyde Park, head to www.bst-hydepark.com.

• The British Library is partnering with the Royal African Society to host the UK’s largest festival of African literature – Africa Writes – this weekend. Kicking off on Friday, the three day festival features Ngugi wa Thiong’o, described as “Africa’s greatest living novelist” (pictured), and his son, rising star Mukoma Ngugi, in a conversation chaired by Ellah Allfrey, deputy editor of Granta Magazine. Other programme highlights include a poetry evening, ‘Diaspora Writes Back’; a tribute to Chinua Achebe, the “father of contemporary African literature”; and the writers short-listed for The Caine Prize – the most prestigious prize for African short fiction. For more, see www.africawrites.org. PICTURE: Ngugi wa Thiong’o © Daniel Anderson.