In the study, a team at the Tallinn University in Estonia collected data from 256 women between the ages of 20 and 45.
Out of these, 71.5 per cent were cohabiting and 28.5 per cent were married.
All were asked questions about their weight, diet, self-consciousness, body image and self-esteem.
It was found that the more satisfied a woman was in her relationship, the more likely she was to be happy with her body, regardless of whether or not she was at a weight considered to be ideal.
Satisfied participants also scored higher in terms of self-esteem and lack of self-consciousness.
Study findings were presented at the annual conference of the British Psychological Society’s Division of Clinical Psychology in York.
The findings suggests that a positive body image “has more to do with how happy we are in important areas of our lives, like our romantic relationships, than it does with what the bathroom scales say,” said lead author and postgraduate student Sabina Vatter.