Gisele Bundchen left an LA studio with her dog Vida close behind yesterday. She's been spending a lot of hard hours at the gym lately, but she changed out of her workout gear to take care of business as she celebrates the 15th anniversary of her career and Earth Day today! She is just one of many eco-conscious celebrities to speak out about environmental awareness, and she practices what she preaches. Gisele has an all natural skin care line, she's a UN Goodwill Ambassador for their Environmental Fund, and she highlights other important world issues on her personal blog like Global Youth Service Day which takes place this weekend. Who knows, maybe in a few years her son Benjamin will even participate!