Wayne buys Loretta ("Amy") a long stem of wild violets, only wild violets don't grow on long stems; they grow close to the ground in clusters.
Mia Mathews (Amy) is an inch taller and a dress size or so bigger than Poppy Drayton (Loretta). But when Loretta gets her sleeve dirty while fixing a bouncy house, she changes into Amy's dress/suit that she had picked up at the cleaners for Amy, and it somehow looked tailor-made for Loretta.