Shajida Begum, an 18-year-old artist, used natural brown henna to draw a small flower on Kate's right hand. "My mother was very upset with me", she told Corden.
Kate had put her fluorescent bib over her green Dolce & Gabbana coat and Seraphine black and white dress and had tied her hair into a ponytail to wear the safety headgear. Although she would often nod yes when acquaintances tell her it gets easier every time, the truth is the duchess finds it hard.
As she and William mingled with nominees Allison Janney and Daniel Kaluuya, "she felt confident", says a source.
The Duchess took the opportunity to fully immerse herself in the cultural event and requested a small henna tattoo after speaking to a group from Young Asian Voices.
"I just told her that I was in bare feet and I felt - I told her she should take her shoes off cause she's pregnant", she said.
Kate Middleton and Prince William moved on after the fire station to the site of the new Northern Spire Bridge which is due to open in Spring 2018. She even swapped her heels for more comfortable boots for the excursion.
When the new bridge is finished, it will help connect the Port of Sunderland and the city centre with the A19.
Kate is expected to welcome the third royal baby in April whereas Meghan is set to walk down the aisle to marry Prince Harry on May 19.
Earlier in the day, met local children (and a 101-year-old woman!) who will benefit from the bridge in the future, as well the engineers and construction workers who were involved in the making of the bridge.
The Northern Spire - named following a public vote - will help reduce congestion around the city, speed up vehicle journeys and allow land along both sidesof the River Wear to be regenerated and developed.