My dad accidentally saw my breasts. How will I face him now?

It was a really hot weather. My breasts were sweating and i was getting uncomfortable. So i took my breasts out of my tshirt like i do sometimes. I have a window in my room through which you could see inside. My dad came to give to me some food and looked through the window since the door was closed. My breasts were out. I think he saw. But he acted very normal and asked me to open the door so that he could give me my food. He gave it and left. He was really normal. What should i do now? How will i face him? Should i say this to my mom?
My dad accidentally saw my breasts. How will I face him now?
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