Mood: The mood of the video appears to be intense and emotional, with a theme of female empowerment and resilience. The title 'Big Girls Don't Cry' suggests that the video may be about women who are strong and independent, and the image of the girls with serious expressions reinforces this idea. The overall tone seems to be dramatic and thought-provoking.

Environment: The environment or setting of the video is likely to be a dark and moody backdrop, possibly a school or educational setting given the uniforms the girls are wearing. The presence of an open book in front of them may suggest a connection to learning or knowledge.