The usually stoic Chanel designer Karl Lagerfeld let loose (and even cracked a slight smile) in Madison Square Park on Wednesday while he took on his other occupation: photographer.

His current muse, gazelle-like model Raquel Zimmerman, posed and made silly faces while the designer snapped away for what I'm assuming is the next Fendi ad campaign. Of course, he didn't leave home without his fingerless leather gloves, dark shades, and square-toe boots. I'm digging the tweed trench coat ...