Meghan Markle has made a surprise appearance at a fashion shoot for her new clothing line with the London charity Smart Works, which helps long-term unemployed women look for jobs.

The American former actress, who is married to Britain's Prince Harry, is a patron of the charity that provides high-quality interview clothes and interview training.

Earlier this year, it was revealed she would oversee a clothing line in collaboration with the charity, to be sold in British stores.

A video clip posted on the royal couple's Instagram account on Wednesday showed the 38-year-old meeting the models as they arrived for the shoot of the new workwear range - offering a sneak preview of the clothing.

Markle, who became the Duchess of Sussex when she married Prince Harry, is already widely recognized as a champion of women's equality and empowerment.