For a coordinating baby or toddler boy rock star costume, there are some cute things on etsy:
Aviator-style rocker sunglasses via nordstrom.
Hairdos and hairstyles for little girls. Fashion finds, hair accessories. Gymnastics, Ballet and dance performance hair, clothing and outfits. Vintage girly hair ideas and inspiration plus how-to's for moms in a hurry! Celebrity girls hairstyles, updos for flower girls and wedding hair.