In the first picture, Eugenie can be seen holding a plant pot alongside Ms de Boinville with both wearing matching face masks.
The plant pots were made for them by slave labour survivors.
In a second and third image, the pair are seen speaking to trafficking and slave labour victims.
The images were posted alongside the caption: “In honour of #AntiSlaveryDay, earlier this week our co-founders HRH Princess Eugenie and Julia de Boinville visited a @salvationarmyuk safe house for a socially distanced visit with modern slavery survivors and staff members.
“They were incredibly moved by the courageous stories of the survivors who had endured sometimes decades of abuse at the hands of traffickers and slave labourers.
“These incredible individuals have the courage to remain inspired by the prospect of a brighter future, despite their difficult journey in the face of extreme adversity.
“In addition to vital safe houses such as the one we visited, Salvation Army also help adult victims get access to education opportunities, legal advice, counselling, and support in obtaining employment and housing.”
Eugenie and Ms de Boinville founded The Anti-Slavery Collective in 2017 after an eye-opening trip a trip to Kolkata, India.
A statement about the charity’s origins published on its website reads: “We met on the bus on our way to a school trip and knew at once that this was just the beginning of a life-long friendship and adventure!
“After following each other around the world, then to Newcastle University, and into our careers.
“In 2012, we went on a trip to Kolkata, India. Here, we visited an organisation called Women’s Interlink Foundation and first became aware of modern slavery
“Aloka Mitra, the founder of Women’s Interlink, rescues girls from modern slavery, gives them a home and teaches them a simple vocational skill – fabric printing.
“We were shocked to discover the extent to which slavery still exists.
“In fact, there are more enslaved people today than at any other point in history and, at any one time, someone is being trafficked within a mile of where you live.
“We often associate slavery with chains and shackles, but modern slavery is a hidden crime that is often hard to detect.”
The website describes the independent collective’s mission as “convening people, connecting people, and highlighting the incredible work that is being done in this space.”
The charity aims to help educate on modern slavery and its consequences as a “global epidemic”.
Change-makers approached to participate in the cause include policy makers, journalists and companies.
Princess Eugenie recently surprised royal fans announcing she and her husband, Jack Brooksbank, were expecting the arrival of their first child.
She delivered the news via an Instagram post with a picture of the expectant parents holding a pair of baby bear slippers.
An official statement from Buckingham Palace read: “Her Royal Highness Princess Eugenie and Mr Jack Brooksbank are very pleased to announce that they are expecting a baby in early 2021.
“The Duke of York and Sarah, Duchess of York, Mr and Mrs George Brooksbank, the Queen and the Duke of Edinburgh are delighted with the news.”
The royal baby will be the ninth great-grandchild of the Queen and Prince Philip.
Source: EXPRESS CO UK