U.S. actor Tom Cruise and his wife Katie Holmes pose on the red carpet at the British premiere of the film Valkyrie at Leicester Square in London January 21, 2009. [Agencies]?

Katie Holmes says her weight loss is down to her hectic work schedule.

The 30-year-old actress - who recently starred in a New York theatre production of 'All My Sons' - claims long hours and a fast metabolism are responsible for her slim shape.

Katie, who has a two-year-old daughter Suri with her husband Tom Cruise, insists it is possible to balance a successful career with having children.

She said: "I happen to be a woman who believes she can have it all. But, we women can do an awful lot if we put our minds to it. And not only that, we can have fun doing it! Even when it's crazy - which is pretty much most of the time - it's fun. At least, that's been my experience."

While Katie - who shot to fame as Joey Potter in US TV series 'Dawson's Creek' - loves leading a busy life, it has taken her time to adjust to the pressures of fame and motherhood.

She said: "I'm not sure I always felt that way. I guess I've had some coaxing along the way. But I definitely feel that way now. It's a good combination for me and Tom - work and family, a healthy balance."