What are the colors I need to dye my hair like Ariana Grande?

Okay, so I'm like obsessed with how gorgeous Ariana Grande is, and I'm trying to look like her. I really want to dye my hair like hers BUT NOT THE RED, THE BROWN SHE HAS IN RIGHT NOW. I want to know what shade of brown I should get, and what are the color to the ends of her hair. Please help.(: