Belgian foreign minister Louis Michel welcomed Yasmine and Sara Pourhashemi at the airport.
The sisters were taken to Tehran by their Iranian father while on holiday in Greece in September.
In December they took refuge at the Belgian embassy demanding to join their mother in Belgium.
Both parents and children have dual Belgian and Iranian citizenship.
Their mother travelled to Tehran recently to resolve the case.
Iranian foreign minister Kamal Kharrazi during his visit to Brussels Tuesday had hinted that the ordeal of the two sisters would end soon.
Iranian and Belgian authorities and the family of the two girls had met in Tehran on Tuesday.
Belgian media has been giving intensive coverage on the subject.
... Payvand News - 5/6/04 ... --