This was my favourite photo from my first shoot in my little home studio. The little girl was bouncy and happy for most of the time, but she was starting to get a bit tired and for a few moments started to complain about a pain in her stomach. Just for a moment, she changed her posture and her expression to this and I grabbed it just before she went back to jumping about like a little dynamo!
Shot on a Fuji X100F (yes, I know, not exactly your standard studio camera, but I love the leaf shutter...) and lit with a collection of cheap old Yongnuo speedlights and even cheaper little soft boxes.