pose for (someone or something)
1. To strike and hold a particular pose so that one may be photographed or painted (by someone). I've been trying to find a new model to pose for me. I hate posing for pictures—it always feels so forced!
2. To arrange a person or thing into a particular pose before being photographed or painted (by someone). The camera man posed me for the photoshoot. My job is to pose the food for promotional photographs, making it look as delicious as possible.
pose for someone or something
to assume a posture appropriate to the subject of a photograph or painting. Paul wanted me to pose for him, but I declined. Will you pose for my painting?