formal royal blue dress A Line Sweetheart Keyhole Long Prom Blue / 16 size long sequin formal dresses for prom. Royal Blue Mermaid Lace Backless

Click here for the full Burleska sizing guide (International size conversion chart - opens in a new window)

Paired with a voluminous ball gown silhouette, this type of neckline can look especially enchanting and flattering

The 3 dresses Im wearing are all on this edit too: Red long sleeve mini dress with pockets Strapless corset midi dress also comes in baby pink and dark pink

She is a fantastic performer, it was amazing to watch her work. Johansson starred in another campaign film for the Galleria bag last April

Differences and Similarities The main differences between cocktail and semi-formal attire lie in the level of formality and the range of acceptable options