Calvin Klein
One of Natalia Vodianova's ads for Calvin Klein.
Vodianova, 33, is the fifth highest-paid model in the world, but she has used her fame to promote non-profit causes that are close to her heart.
In 2004, she set up the Naked Heart Foundation, which supports families raising children with special needs, and creates an inclusive and inspiring environment in which to play for every child in urban Russia, and internationally.
And this year she became a tech entrepreneur by launching Elbi, an iPhone app that lets people donate small amounts of money to good causes and interact with the people and charities who receive the money. The name stands for "Little Big" (LB), and the philosophy behind it is that you can make a big difference through little actions. Download the app here. Elbi's advisory board includes Jimmy Wales (Wikipedia founder), Michael Birch (Bebo founder), Arianna Huffington (Huffington Post), designer Diane von Furstenberg and Brent Hoberman (co-founder of Lastminute.com and Made.com).
Business Insider asked Vodianova to show us, in words and pictures, what a typical day in her life is like. Here's what she came back with.