Fishtail braid. Looks easier said that done.. will give it a try though!
Madrinhas de casamento: Maquiagem, sandália e bolsa para usar com vestido de festa azul
15 Fácil Braid tutoriais que você nunca tentou antes
Head band braid is LOVE <3
Fish tail braid
Pictures of Carrie Underwood Loose Ponytail
Mitsi - another possibility for Down wedding hair
I think some type of side part would be better and the curls more separated into soft, random waves but the feel of the ease of her look and the slight messiness of the top is perfection.