How can i make my dog the best?

this month i'm participating at a dog parade in my high-school.i never did this,and i want my dog to be the best.she's a female tibetan spaniel,black with white.she's very beautiful and all my friends love her.but i was thinking about what outfit should she wear?2 months ago i bought a cool outfit,which is gray,blue and red.i also have a red ribbon to match this outfit,and a red collar.she looks awesome,but should she wear another colors?like pink or purple?or this outfit is very good for her too?