Gauri Khan, Shweta Bachchan Nanda and Ranbir Kapoor were some of the guests who attended Karan Johar's birthday celebration in London last month. According to a source, Gauri and Ranbir also went shopping together in the British capital. Wondering what the connection is? Our source adds that Gauri is doing up the superstar's seventh floor apartment in Vastu Building at Pali Hill. So, the star wife and the actor went shopping for artefacts and more for his abode. Ranbir is currently staying at his grandmother's bungalow in Deonar with his two dogs. He is likely to move into his fancy apartment sometime in September.