ariel in blue dress American Girl Disney Princess Day Flounder & Accessories NIB A hidden zipper along the back fastens the dress for a fitted look and the included hairbow clip completes the ensemble The Little Mermaid Ariel Blue

While the evening served as a pre-Met celebration, some fashion-forward looks were already on full display

Once they get some new stock, that is

and Airmen blue braid

Lulus Evening Excellence Black Ruffled Strapless Dress $50 $99 Pay in 4 interest-free payments of $12.50 with

Case in point: The look she was wearing when she's first introduced in the movie, which only requires a ~fancy~ black hat, white sheath dress, some dainty gold jewelry, and color-coordinating your red mani with your lipstick

Carey Mulligan turned up in a custom Balenciaga gown with a dramatic mermaid silhouette ending in a voluminous layer of white tulle