Movie composer Iván Valdés has a small role as the guitarist in the restaurant where Ana (swapped with David's mind) and Andrea go to dinner.
Despite their time onscreen, Gracia Olayo, Carlos Iglesias, Carlos Areces, Terelu Campos, Aitor Luna, Martín Cuervo and Gonzalo de Castro, appear in the last places of the ending credits as "special collaboration".
Spanish journalist and paparazzi Lydia Lozano was supposed to have a small role in the movie, but it was discarded in the final cut.