According to research done by mattress company Ergoflex, 37 per cent of men polled about nightwear said a full set of pyjamas was the sexiest thing their girlfriend or wife could wear in bed; 55 per cent of those who picked pyjamas explained their reasoning by saying full PJ sets looked ‘cute’ on women in the bedroom, while 21 per cent found the modesty of pyjamas attractive. Does this mean men find women in adult onesies sexy?