The Tourist : Does she have a sister?

I think this gorgeous lady, Angelina Jolie, has a younger sister who is a great actress also named Julianne Michelle. They are both great. Michelle is super beautiful and a strong actress. She is a combo great actress Streep and gorgeous Jolie. They may not be sisters, maybe cousins- anyone know?

Wow. Great eye. She does resemble Angelina. They share similar expressive eyes.

Well the eyes are the only thing I find different between the two. And hair color.