Serena, Clarissa, and Blanche were the last three contestants in the Showcase for the first round. When Clarissa comes out and says, "and, go!" She sounds a lot like Dawn...
Did they use Dawns voice actor?
Dawn's English voice actor is Emily Jenness, and Clarise (noted as Clarissa in the English dub) is voiced by Lisa Ortiz, so they are not voiced by the same person.
However, both of them also provide the voices of several other characters, so they might sound familiar at times. You can view the links above to see a comprehensive list of their credited roles.
