This is the Sonja Dress, offered for free on BurdaStyle from Salme Patterns.
Had to shorten the bodice and adjust the side seams above the waist. I also made the skirt about 2 inches longer than was called for. I really love the simple silhouette and fullness of the skirt. I used a vintage home fabric I got for super cheap. Definitely want to make another version of this pattern. Blogged about here.