Lilibet has not yet met her royal relatives, including her great-grandmother, but will travel from California to the UK for the first time with her parents and older brother Archie, now three. The Duke and Duchess’s second child was born in the US and turns one on Saturday, when celebrations of the monarch’s 70-year reign will be in full swing across the country. Lilibet, the daughter of the Duke and Duchess of Sussex, is expected to spend her first birthday meeting her namesake, the Queen, on the Platinum Jubilee weekend.