Photorealistic Celebrity Encounter Selfie with Controlled Expression

Prompt

{   "metadata": {     "prompt_version": "1.1.1",     "generation_goal": "Photorealistic, believable celebrity encounter selfie",     "determinism": {       "pose_lock": true,       "camera_lock": true,       "anatomy_lock": true,       "composition_lock": true,       "perspective_lock": true     },     "realism_constraints": {       "no_cartoony_proportions": true,       "no_exaggerated_limb_length": true,       "no_fisheye_distortion": true     }   },   "subjects": [     {       "role": "Foreground subject",       "description": {         "gender_presentation": "Female-presenting",         "expression": {           "facial_emotion": "{argument name="facial emotion" default="Calm confidence"}",           "details": {             "eyes": "Relaxed, steady gaze toward the phone screen, lids naturally lowered",             "eyebrows": "Neutral position, no exaggerated lift or tension",             "mouth": "Soft, closed-lip smile or very slight parting, controlled and effortless",             "jaw": "Relaxed with subtle definition, no tension"           },           "vibe": "Casual, self-assured, socially fluent — comfortable around celebrities",           "avoid": [             "Wide eyes",             "Open-mouth excitement",             "Raised eyebrows",             "Overt surprise expressions"           ]         },         "body_language": {           "posture": "Upright but relaxed, shoulders loose",           "energy": "Unbothered, composed, intentional",           "intent": "Posing casually, as if this is a normal social moment"         }       }     }   ],   "mood": "Effortless, grounded, cool, unmistakably real" }