Serena Williams of the U.S. reacts after defeating Kaia Kanepi of Estonia at the 2014 U.S. Open tennis tournament in New York, September 1, 2014.
Age: 33 Nationality: American Prize money: $11 million Endorsements: $11 millionOnce again, Serena Williams finished as the world no. 1 for 2014. She has endorsement deals with Wilson, Nike, OPI and Gatorade. She also holds equity deals with Sleep Sheets, HSN, Mission and the Miami Dolphins. REUTERS

Five-time Australian Open champion Serena Williams shows off her funny side in a new TV Ad for Berlei bras. In a video clip which is appropriately titled "Bounce," the top seed for the 2015 Australian Open shows off her fit physique.

"However you like to move ladies, there's two things that shouldn't she says," of undergarment manufacturer Berlei's latest line of sports bras. The sportswear brand released the ad in time for the upcoming Australian Open, which will begin on Monday.

World no. 1, Serena Williams who earned the top seed for the 2015 Australian Open has won the title of the Grand Slam tournament in 2003, 2005, 2007, 2009 and 2010. Williams will be joined by world no. 1 Novak Djokovic as the top seed at the Australian Open next week.

Serena Williams will meet world no. 2 Maria Sharapova in the final and Novak Djokovic and Roger Federer will be on the opposite ends of the men's bracket. The 18-time Grand Slam champion will aim for her sixth Australian Open title after she failed to reach the quarter final ever since her last win in 2010.

Li Na, last year's winner of the Australian Open has already retired but Williams is expected to have a tough competition from the Brisbane International winner last weekend, Maria Sharapova. On the other hand, the Australian Open champion of 2012 and 2013, Victoria Azarenka might draw a top seed in the early rounds after she dropped to from the top 32.

Meanwhile, the 33-year-old tennis superstar, Serena Williams has been keeping busy not just in preparing for the first Grand Slam tournament of year but participating in the #1in11 campaign - a charity which seeks to help poor children by encouraging them to sports and education. On Sunday, the charity released a video, which featured Serena Williams and fellow UNICEF Global Ambassador, Lionel Messi.

To reach the author of this article e-mail d.ramos@ibtimes.com.au

RELATED STORIES