Britney Spears and a girlfriend party on the Sunset Strip in Hollywood. Spears donned a wig and glasses to attend a karaoke birthday party for a friend at the Roxy nightclub. Spears made frequent trips to the bathroom and stayed for about 45 minutes until "Hit Me Baby One More Time" was played after which she stormed out. February 18, 2007. Click the picture below to access the entire set of pictures in the gallery.