After some years through pics, folios, videos and some info collected in websites and with people that had the privilege to see some of these girls face-to-face, what I can, not too accurately, say is:
Gisele is 5'10'' - a friend of mine's brother saw her once
Leticia Birkheuer is 5'11''/6''? - She was a volleyball player, and everywhere I read she's reported as being 5'11'' or taller.
Ana B. Barros is 6' - I noticed that based on pics and runway.
Isabeli is 5'9'' bellow - based on comparisons with other models.
Ana Hickmann is 6'1'' - reportedly
Fernanda Tavares is 5'10'' - her portfolio
Ana C Michels is 5'11'' - runway
If only I could check this live....
If any of you know these stats more precisely, let me know
Nemova