UNESCO World Heritage Site was at the Goring Hotel 's 105th birthday celebration this lunchtime . Was glamorous in a purple patterned dress by Erdem that showed off her growing baby bump . Visit was an unofficial one and took place after the Duchess was sent a personal invitation . Husband Prince William is currently on an official tour of China and arrived in Shanghai today .
The Duchess of Cambridge was at the Goring Hotel 's 105th birthday celebration this lunchtime . Was glamorous in a purple patterned dress by Erdem that showed off her growing baby bump . Visit was an unofficial one and took place after the Duchess was sent a personal invitation . Husband Prince William is currently on an official tour of China and arrived in Shanghai today .