Tennis player Kim Clijsters of Belgium (R) talks to reporters at Brussels' Zaventem airport September 16, 2009, on her way back from the U.S. Open tennis tournament in New York. The Belgian was hailed as the poster girl for working mums around the world on Sunday when she became the first mother to win a grand slam singles title since Evonne Goolagong triumphed at Wimbledon in 1980. REUTERS/Eric Vidal (BELGIUM SPORT TENNIS)