FASHION SPECIES: Hussein Chalayan is parachuting into Milan Monday to do his part to raise awareness about environmental issues. The London-based designer, who is also creative director of PPR-controlled Puma, is hosting a cocktail to unveil a signature tote bag printed with a menagerie of extinct and endangered animals. The non-profit project is in support of the PPR-sponsored film “Home” by Yann Arthus-Bertrand and Luc Besson that premiered earlier this month. The tote, priced at 50 euros, will be sold online at Thecorner.com, with proceeds going to GoodPlanet.