Asda has launched a range of party dresses to suit all women's bottom shapes, after a study revealed that diets and exercise have changed what the modern woman's posterior looks like.
The Wonderbum range has been unveiled after the survey revealed that 85% of women worried about the size and shape of their bottoms.
The poll found 55% were at their most self-conscious when buying new clothes and 62% said they did not know how to "dress their behind" this party season.
The study claimed modern day diets and exercise had altered the shape of women's bottoms from the traditional peach to the four new shapes.
The tomato shape, the most common of the new categories, seen on 45% of women, is "bigger, plumper, rounder and squishy to the touch", the retailer said, while the "less fortunate" potato shape, suffered by 30% of women, is wide, long and lumpy.
The pear shape is narrower at the top and almost twice the size at the fullest part of the behind, and the nectarine is "close to the cartoonesque derriere perfection of two bowling balls pushed together".
Asda said: "Unfortunately, this is a rare bottom and it's not often seen strutting down the high street with only 10% claiming to own this perfect derriere."
A spokeswoman added: "Women should celebrate their shapes this Christmas. We've designed a range of gorgeous party dresses to suit every shape and size.
"The nation's bottoms will shine on the dance floor this Christmas whether in a floor-length maxi dress or our structured black lace dress."
The Wonderbum range features four dresses in sizes 8 to 20, priced from £20.