Party Game ideas for 14 year old girls?

i am planning my sisters pool birthday party thats in 3 days and i need ideas on games to play, she is 14 years old and we have a big backyard, maybe games we can play in the pool? she likes sports and there are even numbers of guests so maybe make teams? i was thinking maybe a version of jeopardy with questions about her and the winner gets a something. i dont know please help me with some ideas since the birthday party is really close, tyy :) ( it's a girls only party)