I need costume ideas for my 3 year old (pics included)?

I would go with a light green, light purple, and pale yellow theme. Maybe lighten the color up for the flowers(lighten them or add a lil' glitter) to add a flair. And use all the colors together for the ribbon. A pair of brightly colored tights in that color scheme would really tie it all together. That lil outfit is thee cutest i've seen so far! Adorable! little girl.