Dressed as Girl Tennis Player

I play tennis every day of the week right after school for about 4 to 5 hours. I play high level and most of the people i play with are girls. This one girl in particular im really good friends with. Her name is Sarah. We hang out alot and get along very well. She is very pretty and very girly. One day we were hanging out at her house. She has a private tennis court outback and we had just finished playing. Recently i had gotten alot better and had gotten to her level. I hit very well and she didn't. She was bragging saying how much better she was so i bet her that I could beat her at tennis under any circumstances so long as we were both playing under the same circumstances. She agreed and said to be at her house the next day at 10 in the morning. I said she could even pick the circumstances to make it fair. I went home that night and ate alot of pasta which is good for energy and went to sleep early so i would be well rested. I got to her house 45 minutes early so i could streatch and warm up. When i got there her and her best girlfriend Maria were in her room. They were sitting on her bed talking. I came in and said what are the circumstances she said you have to wear what i wear. There she was sitting in a pink womans tennis dress with her hair pulled back in a ponytail and makeup on. She said suprise. I said no way there is no way im doing that. She said that she will tell my mom that i stole from her. My mom was against stealing and went crazy if i was accused of it and she would scold me. I agreed and let her and Maria put an identical pink dress on and makeup and pull my hair up(im a surfer so i have chest length blonde straight hair). I went out an played an just sucked and she beat me. Iwent home depressed and sad.