Caroline Wozniacki's passion for tennis started at an early age when she saw her parents playing and they told her she was too young to join in. "With my character, I had to prove them wrong," she remembers. Because of this, she started practicing by hitting balls against a wall for three hours a day. When she reached the age of seven, they saw how serious she was and enrolled her in lessons.

"I can't run from where I came from, nobody can," says Katy Perry. When it came time to make her exhilarating second album "Teenage Dream," Katy found herself increasingly drawn back home to Santa Barbara, Calif. Back to where they knew her before she became a superstar. Before she kissed a girl and liked it. And, certainly, before she sold 5 million copies of her Capitol Records blockbuster...

Georgina Fernandez, a.k.a. Baby G, is a Berlin-based DJ and electronic producer who's been spreading her disco-electronica love around the globe since the mid-nineties — from Miami and New York to Brazil, Thailand and all over Europe. In the mid nineties, when the explosion of the club scene was happening in Spain and particularly in Barcelona, she was already a regular Dj spinning...

Li Bingbing is one of China's most famous and celebrated actresses. But it wasn't until she graduated from high school, and a friend persuaded her to join the Shanghai Drama Institute in 1993, that she discovered a passion for acting that would change her life. Her debut role in Zhang Yuan's Seventeen Years in 1999 earned her a Best Actress award at the Singapore Film Festival and...

As demi-soloist dancers in Berlin's internationally renowned ballet institute Staatsballett Berlin, these girls give new meaning to dedication. Training up to 10 hours a day, six days a week, ballet is much more than a job to them; it's a way of life. Berlin native Sarah Mestrovic joined the company in 2003 and has since delivered unforgettable performances in ballets including Cinderella...

In 2009, at just 20 years old, Wei Qiuyue was named captain of the Chinese women's volleyball team, a role that calls not only for incredible physical fitness but mental strength and endurance as well. Wei has been proving she has all three in spades ever since, taking bronze in the 2008 Beijing Olympic Games and to lead her team to victory in the Asian Cup the same year...

Julia Schoierer, a.k.a. Sneakerqueen, is a photographer, artist, blogger and sneaker aficionado from Berlin, Germany. She earned her nickname thanks to her ever-expanding collection of hip-hop-inspired sneakers and über impressive knowledge of sneaker culture and history. But while she's fascinated with classic hip-hop — collecting everything from sneakers to Cazal sunglasses...