How to help keep my face from turning red?

Whenever I get nervous or see someone or talk to someone I like or am not fully comfortable with my face turns red and I get very hot. I don’t know how to control this. In a few months I have a very important event where I have to meet parents that I don’t really know and I know my face will turn instantly red. I also will be takin many pictures so that doesn’t help either. Does anyone have any tips?!?