Sears! We bought DD's flower girl dress in the First Communion section, and they had probably 10 different styles. Watch for sales. They are "normally" priced around $70 there, but are almost always on sale for around $35. Since you're near where we used to live, the Sears we had great luck at was the Clackamas one.
--Mimi
Mom to Lala (2004), Bonus Mom to Big Sis 1 (1991) and Big Sis 2 (1992)
Grammy to Big Kindy Kid (2011), Big Pre-K Kid (2012),
Grandbaby Appendage (2014), and New Baby Grandboy (summer 2017)