UGG celebrates its 40th anniversary with its limited edition 40:40:40 collection. The range features iconic UGG styles revisited. Launching a campaign for the outing, the label collaborates with photographer and visual artist Erik Madigan Heck. The artist references famous California landscapes such as the Redwood Forest for the occasion. Meanwhile, designer Heron Preston and model Adwoa Aboah front the advertisement. Preston is the latest designer slated to work with UGG on a collaboration. He'll present his collection during Paris Fashion Week in January.