The style is of the late 19th-century fashion, specifically the Victorian and Edwardian eras, which were popular 

The dress is a vintage-style, full-length gown, a Gunne Sax by Jessica McClintock, featuring Victorian and prairie design elements. It is a modern-day size 10.

Key Features:

The dress is primarily cream or ivory with a subtle pink hue and floral pattern in the main skirt. The fabric is a satin blend, with extensive use of lace.  It has a high, lace-trimmed neckline (mock neck) and a lace overlay on the bodice. A large, ruffled lace capelet covers the shoulders and upper chest. The sleeves are short, with a slight puff or ruffle effect due to the lace overlay. The skirt is long and flowing, with a ball gown length. It features two large decorative bows on the front, one on each side, made of the same fabric as the skirt. The hem of the dress is tiered, with a deep ruffle of coordinating lace along the bottom edge.