CHARLEROI (Belgium) (AFP) Belgiums former world number one Justine Henin made a winning return after an 18-month absence with victory over compatriot Kirsten Flipkens in an exhibition match here on Saturday. Henin overcame a tentative start to win 6-4, 6-4 and will contest Sundays final of the 'Women Tennis Trophy against the winner of the match later on Saturday between Italys Flavia Pennetta and Frances Alize Cornet. The 27-year-old is due to make her official return to the WTA circuit in the Brisbane tournament that starts on January 3 next year, 15 days before the Australian Open in Melbourne. Henin announced her retirement from top-level tennis in May 2008 after winning seven Grand Slam titles and spending a total of 117 weeks at the top of the womens rankings. Fellow Belgian Kim Clijsters made a stunning return to the sport in the summer, after a two-year absence to start a family, by winning the US Open.