Romeo and Juliet have renaissance styled clothing.
A Romeo costume might include knee breeches or fitted pants with a long sleeve lace up or a ruffled poet shirt.
Juliet's gown would be a dress in rich fabric and accented with jewels, gold cord or other beautiful embellishments.
Gnomeo and Juliet both wear tall conical caps. the female gnomes typically wear a long skirt and apron.
Gnomeos side wears blue caps and Juliet's wear red. the blue cap represents the Montagues and the red represent the Capulets.