According to an announcement on the singer's website:
Darling daughter Viva Katherine Wainwright Cohen was born on February 2, 2011 in Los Angeles, California to proud parents Lorca Cohen, Rufus Wainwright and Deputy Dad Jorn Weisbrodt. The little angel is evidently healthy, presumably happy and certainly very very beautiful.
Daddy #1 would like to offer everyone a digital cigar and welcome the little lady in with a French phrase from his favorite folk song, A La Claire Fontaine : "Il y a longtemps que je t'aime, jamais je ne t'oublierai."