Camara DaCosta Johnson, professionally known as Yaya Alafia (formerly Yaya DaCosta), is an American actress and model. She is best known for her leading role as April Sexton in the NBC series Chicago Med, her role as Andrea Vaughn in Our Kind of People, and her role as Whitney Houston in the television film Whitney.

She placed second in the third season of America's Next Top Model. She subsequently appeared as Cassandra in the ABC daytime soap opera All My Children, as Nico Slater in the ABC comedy-drama Ugly Betty, and as April Sexton in the NBC medical drama Chicago Med.

She has also appeared in films including Kids Are All Right, In Time, The Messenger, The Butler, And So It Goes, and Nice Guys.