Very pretty. The colors must look wonderful when you are dancing!
Have you tried looking on ebay or Craig's list? Sometimes you may be able to find evening gowns or prom dresses, even bridal dresses that you can "remake" into a ballroom dancing gown. Do you have any thrift stores nearby? I'd try there, too. Even if a dress seems to be dated, you could use the fancy fabrics. Just a thought.
Could luck in your future competitions! I adore ballroom dancing. My favorite...the Viennese Waltz, so graceful.
Anita