Excuse her legs being so dirty lol, it was muddy when the pic was took (: They are supposed to be white but where theres a little bit of brown at the top, you can distinguish whats natural...sort of, LOL
Yep she is a sorrel overo. Overos have white splashes on the side, often have white faces and a blue eye or two. They also are less likely to have stockings than Tobianos. There patterns are more jagged than tobianos too, and rarely cross the back. Tobianos usually have stockings a normally marked face and white patches running from their backs down. Tovero is when they have both patterns overlapping. Your girl is straight up overo.
There are many different "overos", of which your girl is definitely at least Frame (aka LWO). If you were to ever breed her, you must make sure the stallion has been tested negative LWO or else your foal has a 25% chance of dying within the first day of life.
Thnx everyone (: I know her coloured markings are chestnut (with alot of roaning cos theirs loads of white hair flecked through the colour) I just wasnt sure if she was overo or tobiano. Now I know the difference between the two!! Thanx again =D