Dress: ERIN by Erin Fetherston Eliza Colorblock Dress
Pumps: Jimmy Choo Metallic Blue Pointy Toe Pumps (sold out)
The dress is also available in a beautiful poinsettia red from Neiman Marcus, or you can rent the slightly more demure version from Rent the Runway in pink/black.
Feminine is definitely a word you can use to describe most of the designs from Erin Fetherston. In this Forbes article from 2015, the designer describes her inspirations as a combination of "Taylor Swift, Fairy Tales and Polished Pixies." You can't get more feminine than that!