Are the costumes you get at the Disney Store the same ones you get at the Bibbidi Bobbidi Boutique?

The dresses are not the same. The dresses at the parks are made better, but of course, also tend to cost more. Dresses sold at the parks are also more elaborate. I worked first hand with Disney dresses at various shops at the WDW Park, particularly "In Character" at the Hollywood Studios, and I've noticed a distinct difference.