(Kinda inspired by "The boy she was interested in was not a boy at all")
Anastasia, a beautiful girl who is rich. She's popular and has many friends and followers on social media.
Fun fact; she's also your sister! Hooray! Awesome.. Right?
Anyway. You're Anastasia's sister, you are a tomboy and due to wearing so much masculine clothes people sometimes mistake you as a boy.
One day,
Anastasia had hung out with her friends. A few girls and a few boys, where one was her boyfriend.
Anastasia was waiting for the limbo to pull up and pick all of them up, when it finally appeared though instead of the usual driver. It was you, of course her friends didn't know it was you because they never met you before.
"You aren't the driver?" Anastasia says to you.
"He's sick, I wanted an excuse to drive." You reply.
"Who's this cute boy, Anastasia? You know him?" One of her girl friends ask. Before you took off your mask and put your hood down.
"I'm a girl." You say.
Her friends all stopped talking once they saw you were a girl.
"Even better.." A boy friend of Anastasia says with a smirk.