A size 24 woman who was spurred on to after discovering her husband was having an affair has managed to shed an incredible 12st.

Leanne Champ, 28, ballooned to 20st after gorging on McDonald’s on a daily basis while living in an unhappy marriage.

But after looking in the mirror one morning Leanne realised she needed to focus on her own happiness and began making drastic changes to her lifestyle.

Over the past two years, she has managed to slim down dramatically by swapping her fast food diet for healthy meal replacements.

Explaining how her unhappy relationship led to her piling on the pounds, Leanne said: ‘When I was 21 years old, I got married and, due to family commitments, had to leave full time employment to start work part time.

‘During this stressful period in my life, I turned to comfort eating as a coping mechanism. Although I wouldn’t acknowledge it, I knew the weight was piling on.

‘I had an extremely unhealthy diet which consisted of working through multi-pack crisps and trips to McDonalds’s on a daily basis, and exercise was kept to a minimum.’

Leanne says she was spurred on to turn her life around after seeing herself in the mirror one morning – and decided it was time to end her marriage of six months.

 She added: ‘The next time I jumped on the scales, at the age of 24, I weighed 127kg, the biggest I had ever been, and I knew things had to change.

‘I left my unhealthy, and unhappy, marriage, one in which my husband was having an affair and decided that I needed to focus on my own happiness for a change.

-Dailymail