A fishtail gown is a type of dress that is tight-fitting through the hips and thighs and flares out at the bottom, resembling the shape of a fishtail. Full definition
Burgundy plunge neck fishtail gown from LA FEMME featuring a deep V neck, a sleeveless design, a fitted silhouette, a flared skirt, a long length, a crisscross back and a concealed rear zip fastening. (polyvore.com)
Also joining the cause was former TOWIE star Lydia Bright, 28, who showed off her curves in a beautiful strapless fishtail gown by AloNuko which flattered her figure perfectly. (dailymail.co.uk)
There were strapless fishtail gowns aplenty, more than a couple headbands (did this look Claire's - like to anyone else?) (fashionista.com)