The Serenya powder blue summer dress is the definition of fun. With an open back, a smocked fitted waistline, and a tiered a-line skirt, this light blue sundress is flirty and thriving. Adding feminine flair, the straps on this deep-v halter sundress tie into a large bow behind the back of the neck. Lace trim on the flared mini skirt enhances the girly vibes. Make this backless casual summer dress in powder blue your go-to choice for a cute look at outdoor events this year.