My Secret Identity - Season 3 Episode 9 Calendar Boy
Overview: Kirk and Andrew manage to get backstage passes at a model show being held at their school. When one of the models is injured, Andrew is enlisted as his replacement. But while he is getting changed, the school photographer takes a picture of him and makes it into the year's school calendar! Andrew discovers instant popularity and money, but in the end has to make the choice of whether it's really worth it.