Without knowing her ancestry (i.e. a registered breed) she would be considered a Domestic Shorthair or DSH. Her color/pattern is brown mackerel tabby. I agree with StefanZ that she is absolutely gorgeous, but I have to disagree on the similarity to a Somali. A show quality Somali will have no stripes at all. A pet quality Somali may have some stripes on the legs or a necklace, but still will not have any stripes on the sides.
I think her body type, head, and ears would put her closer to a Siberian lookalike.