If i want to get my hair cut but i don't know what the hairstyle is called what should i do?

i want it cut like J.Lo cut hers in the movie enough see?: https://images.allmoviephoto.com/2002_Enough/jennifer_lopez_enough_005.jpg

https://us.movies1.yimg.com/movies.yahoo.com/images/hv/photo/movie_pix/columbia_pictures/enough/jennifer_lopez/enough10.jpg

https://us.movies1.yimg.com/movies.yahoo.com/images/hv/photo/movie_pix/columbia_pictures/enough/jennifer_lopez/enough8.jpg

but i don’t know what that hairstyle is called…also i have african american hair and seeing as my hair is nappy would that be a smart move as far as getting it to stay like that without spending 40 bucks to get it done every two weeks?