Nearly one in five British women would sacrifice a pay rise or promotion for a bikini body they they could show off on the beach, a survey claims.

The survey shows how ambivalent women feel about wearing a bikini, as many of those interviewed said they found it as stressful as meeting their partner's parents for the first time.

And 45 per cent said they thought their partners looked at foreign women on the beach because they have better bodies.

The survey, carried out on behalf of Slim Fast, found that, while there were 19 per cent who would sacrifice a pay rise, 21 per cent would rather sing karaoke in front of 100 strangers than bare all.