Serena Column Spaghetti Straps Short/Mini Cocktail/Homecoming/Gossip Girl Fashion Dress-in Celebrity-Inspired Dresses from Apparel & Accessories on Aliexpress.com

Its actually a dress from when serena goes to Blair's mom's fashion show with Poppy Lifton.

As seen in
  • blouse gossip girl serena van der woodsen shirt pretty tank top