Simple past tense and past participle of flounce.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "flounced" in a sentence
"Eiffel Tower, and so on, there isn't much to do on PEI except visit the gorgeous pink-sand beaches, drive around, and gawp at the busloads of giggling young Japanese women in flounced petticoats and calico who are Anne of"
"It was green with pink posies on it, too, and it was flounced from the waist to the hem."
"And to say that David Davis 'flounced' out is silly."