How would I get my hair this colour?

Get manic panics blood red and their orange and mix two parts red one part orange and you should get that color.

If you want this colour, I recommend to bleach your hair and then dye it with a semipermanent. Her hair looks kinda reddish orange on the i would recommend la riche directions in fire, tangerine, or mandarine, or a mixture of those, whatever you like.

You can always change the colour to your liking by mixing the dye with other dyes or conditioner (conditioner will lighten it, plus you'll need less dye).

Ps: you don't necessarily HAVE to bleach your hair, if you're a blonde, but the lighter the base, the more vibrant the colour will be. Also because you want it kind of orange, you don't have to have white hair, brassy/orange will do fine!

Hope this helps!

DYE it orange