Gym Selfie of Sadie Sink and Millie Bobby Brown

Prompt

{   "scene_description": {     "location": "Modern indoor gym",     "background_elements": [       "Full-wall mirrors reflecting the room depth",       "Rows of black dumbbells on racks",       "Cable weight machines in the background",       "Black padded weight bench on the right",       "Black rubber gym flooring",       "Linear LED ceiling lights providing bright, cool illumination"     ],     "atmosphere": "Energetic, fitness-focused, casual lifestyle"   },   "subjects": [     {       "id": "subject_1",       "position": "Left",       "appearance": {         "hair": "Reddish-blonde, long, tied back in a ponytail",         "skin_tone": "Fair",         "expression": [           "Beaming smile",           "Looking at mirror",           "Looking sideways",           "Smiling directly at camera"         ]       },       "apparel": {         "outfit_type": "Matching ribbed workout set",         "color": "{argument name="subject 1 outfit color" default="Lemon yellow"}",         "top": "Sports bra with a scoop neck and visible 'alo' logo on the band",         "bottom": "High-waisted biker shorts (mid-thigh length)",         "footwear": "White crew socks, white sneakers"       },       "poses": [         "Standing with hands on hips",         "Standing slightly turned inward",         "Wide stance squat with hands resting on thighs"       ]     },     {       "id": "subject_2",       "position": "Right",       "appearance": {         "hair": "Brunette, styled in a messy high bun",         "skin_tone": "Light-to-medium",         "expression": [           "Soft smile",           "Focused neutral expression",           "Looking at phone screen in mirror"         ]       },       "apparel": {         "outfit_type": "Matching ribbed workout set",         "color": "{argument name="subject 2 outfit color" default="Bright red"}",         "top": "Deep V-neck sports bra",         "bottom": "High-waisted mini shorts",         "footwear": "White crew socks, white sneakers"       },       "accessories": [         "Smartphone with dark case and MagSafe ring",         "Black dumbbell with silver handle"       ],       "poses": [         "Standing holding phone for mirror selfie",         "Goblet squat holding a dumbbell at chest height with both hands"       ]     }   ],   "camera_perspective": {     "type": "Mirror selfie and low-angle timer shot",     "framing": "Full bod...