Wife's bra size? Dress size? Date of birth? This might sound like basic information but millions of men haven't the faintest idea
Millions of men are completely clueless when it comes to choosing a Christmas gift for their significant other a new survey has found.
39 per cent have no idea what their wives' bra size is, while another 23 per cent don't know what dress size she takes.
Most shamefully of all, 12 per cent don't even know their other halves' date of birth.
Clueless: Many men have no idea what their wives' dress size is - or even their date of birth
The survey also found that 34 per cent of men have no idea what their partners' favourite perfume is and 24 per cent don't know what her favourite clothes shop is.
A staggering 11 per cent were also blissfully ignorant of their wives' real hair colour and shockingly, 10 per cent admitted to not knowing what their other halves' do for a living.
Not surprisingly, the research, conducted by high street beauty retailer, Superdrug, also found that 40 per cent of couples have fallen out because the man has forgotten - or not bothered to ask - about things he ought to know.
As a result, 12 per cent of women have had to return a gift they didn't like because their partner hadn't bothered to pay attention.
Tension: As a result, 40 per cent of couples say they've rowed because of male forgetfulness
Fragrance fail: 34 per cent of men don't have a clue what their wives and girlfriends' favourite perfume is
CLUELESS: 10 THINGS MOST MEN DON'T KNOW ABOUT THEIR WIVES
1. Mobile number - 54 per cent
2. Bra size - 39 per cent3. Favourite perfume - 34 per cent
4. Favourite clothes shop - 24 per cent5. Shoe size - 23 per cent
6. Dress size - 23 per cent7. Underwear size - 20 per cent
8. Date of birth - 12 per cent9. Natural hair colour - 11 per cent
10. Job title - 10 per cent
'The results of this study are quite alarming,' said Gemma Mason, marketing manager for Superdrug.
'There are some basic details men should really know about their partner - in particular, eye colour and natural hair colour.
'Men can be forgiven for not knowing their partner's mobile phone number off by heart but it's not difficult to take a look on their dressing table to see what perfume they're using.
'Christmas shouldn't be fraught because a woman receives a gift that makes her feel she's a stranger to her partner.'
Along with being unaware of their wives' bra and dress sizes, date of birth and job title, men also struggled to recall where their other halves went to school (28 per cent).
Anything that involves dates causes major problems, with a third of the men surveyed confessing to being unable to remember the day they met their wife or girlfriend.
20 per cent of men had no idea what their partner's best friend is called and the same number admitted that they didn't know whether their significant other suffered from allergies.
Shoe size, middle name and favourite song or film also baffled the majority of male respondents.
Although the men themselves were hapless when it came to remembering their partner's likes and dislikes, more than three quarters of men said their wife or girlfriend would probably know everything about them.
When it comes to Christmas shopping, it appears that being female is definitely an advantage.