I trhought that zigzag pattern in her mane was braids. I didnt' look very closely.
Can I make one small recomendation? The caveson on that bridle seems kind of low, at a level where it might be interfering with the bit rings. Looks like it could go up an inch or so. It looks kind of heavy for the horse's rather fine face. When you are rich and famous, buy yourself a smaller, more delicate one.