Thanks to you both. I've taken your advice and according to Wikipedia (reliable?) cast list was as follows
Natane Adcock · Tyra Banks · Elsa Benítez · Leilani Bishop · Gisele Bündchen · Laetitia Casta ·
Ana Cláudia Michels · Trish Goff ·Eva Herzigová · Kirsty Hume · Kiara Kabukuru · Carmen Kass ·Jaime King · Heidi Klum · Hollyanne Leonard · Adriana Lima · Karen Mulder · Daniela Peštová · Frankie Rayder · Inés Rivero · Stephanie Seymour ·
Eugenia Silva
So by a process of elimination I'd say that 8 & 10 are Hollyanne Leonard and 12 is Leilani Bishop.