Telling 16 year old girl we're pregnant

Kim

My boyfriend has full custody of his 16 year old daughter and we all have been living together for a year. Her and I have a pretty close relationship as she doesn't see her mom often and we just connect really well. I'm pregnant and want to tell her in a special way but have no idea how. She's a tomboy and will not have a huge reaction either way,but I want to make it special for her. Any suggestions?