By MARTIN ROBINSON
After a difficult day where William attended the funeral of his beloved nanny and Kate was forced to do a solo engagement, the Royal couple were reunited last night.
They went to a party at the exclusive London private members club Loulou's in Mayfair with other guests including the Duchess of Cambridge's sister Pippa and the Duke's cousin Princess Eugenie.
They are very rarely seen out together other than at an official event but the pair decided to let their hair down - leaving the club at around midnight.
They arrived unexpectedly - 'Nobody knew they were coming and then at 10pm they were swept in through a back door. They stayed for about couple of hours,' an insider told MailOnline.
Kate's sister Pippa was also at the event, and was seen leaving with a friend in a taxi at around 2.30am after a night catching up with her sibling.
Princess Eugenie was also seen smiling as she left Loulou's with her boyfriend Jack Brooksbank, and others also at the party included Jemima Khan and her brother - MP Zach Goldsmith.
Loulou's is owned by Robin Birley, who is the son of Mark Birley who created the famous Annabel's club, named after the mother of Zach and Jemima - Lady Annabel Vane-Tempest-Stewart.
The exclusive Annabel's was frequented by the Prince of Wales, Camilla Parker-Bowles, Princess Anne, US President Richard Nixon and Frank Sinatra among many more.
It came as Kate returned from a successful trip to Newcastle where she wowed large crowds and even hugged a lucky young boy who was waiting to see her.
Cheeky ten-year-old Terry Campbell managed to get a full hug from the Duchess of Cambridge simply by holding his arms out wide for her.
Terry was among a group of children from a local school who were waiting excitedly outside Newcastle’s Civic Centre for a glimpse of Kate.
When she saw him gesturing she opened her arms and asked: ‘Am I going to get a cuddle as well?’ Without a second thought she then leant over the steel barrier and embraced him.