Lighting up the stage! Katy Perry performs during the semi finals of The Voice Of Germany on Friday

Their behind you! The Wide Awake singer had a white theme for her performance, which was filmed in Berlin

Bridal-inspired: The 29-year-old made sure she stood out in a light-up dress

Atmospheric: The star’s dress featured frills around the top and hemline

Spooky: The singer’s backing dancers cut ghostly figures as she belted out hit, UnconditionallyRock chick: Katy later changed into a skimpy top and tartan skirt as she sang her second song of the nightRaunchy: The singer showed off her ample cleavage as she danced raunchily with her fishnet-clad dancersBizarre: The singer’s pins are on display in the short skirt, which was worn with a red purse over the topSmoking: The curvy star posed alongside a cube at the start of the setWhere are the frills? The US star was wearing something a little more practical on Wednesday, when she left the ITV studios