Striking a pose against a battered old motorcycle in draped black mini-dress, paired with calf-grazing pirate boots, Emma Watson's third and final collection for People Tree possesses more than a whiff of rock 'n'roll glamour.

Keen to shed the goody-two-shoes image of her Harry Potter character Hermione Granger, the 20-year-old actress has opted for a music-festival vibe for her last spring/summer 2011 collection.

"I designed the collection last year after I'd started university in the US," Watson revealed. "Safia, People Tree's founder, and Misato, People Tree's designer, came out to work with me in Rhode Island. Together we decided on all the colours, fabrics, shapes and craft skills. Most of all, we took care to design a really wearable collection that truly celebrates the traditional skills of People Tree's fair trade groups around the world."