Posted to Foro Dinastias by Minnie on 24 August 2011. The head and face area of the posted image had extensive scratching around the margins that were edited with Photoshop (the fist area of the hand to right shows the damage) by gogm. So the coiffure may not be real.
I could not make out the photographer's name on the label.
María Cristina is dressed in ca. 1910 style with a square neckline (with partlet as would be appropriate for an older woman) and columnar skirt.
Keywords: María Cristina Habsburg, Archduchess, Queen, Habsburg family, Borbón family, Spanish, straight coiffure, under-bodice, elbow length close sleeves, high neckline, square neckline, under-sleeves, close skirt, necklace, earrings, brooch, bracelets