Casiraghi and Gucci have pooled their love of horses and riding - Casiraghi is a show jumper, while the label's founder, Guccio Gucci, appropriated the brand's signature green and red stripe from the canvas girth strap of a horse's saddle - to create the campaign.
With a stable as a backdrop, Casiraghi cuts a pensive figure as she models a Gucci headscarf and handbag trimmed with Gucci's red and green motif.
Gucci's creative director, Frida Giannini has been exclusively designing Casiraghi's riding gear for the past couple of years, and has enjoyed taking their partnership to the next level.
Talking of 25 year-old Charlotte, Giannini said: "She not only embodies the beauty and the grace of the equestrian, but is also a wonderful ambassador for the sport. While designing her riding wardrobe, I have gained an appreciation for her innate ability to combine family traditions with a uniquely modern attitude... Charlotte brings the spirit of Gucci to life so elegantly."
Casiraghi, the granddaughter of actress Grace Kelly (Princess Grace of Monaco) said: "There was a great synergy while working with Frida and her team to elaborate this unique collaboration with Gucci and we all really had the same desire to make it something special and creative."
The new 'Forever Now' campaign will appear worldwide from March 7, running in newspapers and fashion and lifestyle magazines complementing Gucci's seasonal fashion campaigns.