Australian actress Jessica McNamee (that we all remember from the horror movie The Loved Ones) has joined the cast of the romantic drama The Vow.Movie already stars Rachel McAdams as Paige and Channing Tatum as Leo. McNamee will play McAdams’ estranged younger sister. Michael Sucsy will direct the picture, and rewrite the script which will follow: “…a newlywed New Mexico couple (McAdams and Channing Tatum) who end up in a car crash. The wife is put in a coma, and when she comes to – without any memory of her husband or their marriage – the husband attempts to wins her heart again.” Roger Birnbaum, Gary Barber, Paul Taublieb and Jonathan Glickman are producing the movie which begins filming in Toronto next month. The Vow also stars Scott Speedman, Dillon Casey, Jeananne Goossen, Kim Roberts, Joey Klein, Johnny Larocque and Dharini Woollcombe.