Mood: The mood of the video appears to be upbeat, youthful, and vibrant, with a theme of intrigue and curiosity, as suggested by the title 'Who's That Girl'. The overall emotion conveyed is one of excitement and playfulness, likely indicating a music video or a light-hearted dance performance.

Environment: The setting seems to be a studio or a controlled environment with a white background and pink grid lines, suggesting a modern and trendy aesthetic. The presence of three individuals, likely performers, implies a performance or music video setting.