Michelle Obama, First Lady of the United States, standing in front of the Willis Tower (Sears Tower), Chicago, Illinois, cloudy day, bright blue dress, pearl necklace, curly brown hair, warm smile, solo, confident posture, arms crossed, high heels, urban cityscape background, detailed skyscraper architecture, glass and steel structure, American flag waving on top, subtle wind blowing, soft natural light, shallow depth of field, cinematic composition.