Hellebaut is the third Belgian sportswoman to announce her return to top class sports after the tennis starts Kim Clijsters and Justine Henin.
Hellebaut told reports in Brussels: "I wonder if I can repeat their comeback in high jumping."
Hellebaut continued: “I enjoyed my job as account manager at Golazo, but there was always a little voice whispering in my head. It said 'Wouldn't it be a challenge to try for the two metres?' When you hear a voice like that you have to give in to it."
Hellebaut finished her athletics career in 2008 after becoming the Olympic champion in Beijing. Then she tried for a baby and Lotte was born in 2009.
The Belgian first came to prominence in 2006 winning gold in the high jump at the European Championships. A year later she repeated this feat.
In 2008 she won gold in the indoor pentathlon at the World Championships.