According to the study, women are keen to see what "the opposition" is wearing, how much cellulite they have, what their hair looks like and how thin they are.
Clocking other women's shoes, height, cellulite, which brand their handbag is and whether or not they have had plastic surgery is the usual thought process of women, researchers found.
Others check out women to see if they are leaner than them, trying to spot dark or unflattering hair roots, while looking out for wedding rings makes up to the checklist as well, the 'Daily Mail' reported.
Half of the 2,000 women polled by an on-line retailer said they 'enjoy' comparing themselves to women they work with, befriend or pass in the street.
Researchers found beach is the place where most female ogling takes place, with 80 per cent of those polled saying they love having a good look at other women when they are sunbathing.
They also found one in five like to guess what country other women are from, 43 per cent like to check out their swimwear and one in twenty like to critique their tans.
A third said that they would be more impressed by a female with a toned physique than a man and 42 per cent said every woman was something to compare themselves to.
A competitive one in ten women said they always want to look better than other women and a more realistic and 40 per cent said they don't compare themselves to other women in a spiteful way.
Nearly half of those polled said they compliment women they don't know on how they look, with the most likely compliment to be about their clothes.
Whereas 86 per cent of women said they would never dream of going up to a man they didn't know and paying him a compliment. 25 per cent said it would go to a man's head.
On a day to day basis 42 per cent of ladies said they dress to impress their female peers and not the opposite sex - and even on big night-outs it is girls they are trying to impress not men.
As many as 50 per cent said they get a genuine buzz when women they don't know give them a compliment on how they look, but a cynical 43 per cent say they don't believe it when a man pays them a compliment.
Things that women notice on other ladies include clothes, hair-style, tan, size, cleavage, cellulite, hair colour, size of breasts, shoes and their bags.
