If you're looking for a fab holiday party dress then head on over to ModCloth for a plethora of choices. I'm currently coveting their Luster Up the Energy Dress (Bottom right hand corner). It's oh so mod!
(Remember to expand the details section of the dress you're interested in to make sure it's vegan.)
The Whole Package Dress • Made in the Eighties Dress • Handwritten Letter Dress • Francesca's Red Hot Dress • Quoth the Raven Dress • Forest Coral Dress • Luster Up the Energy Dress • Geode to Joy Dress • Dare to Be Square Dress
Image Source & Credit: ModCloth