Singer Adele is turning vegetarian to lose weight after fashion designer Karl Lagerfeld called her too fat.

The 23-year-old Grammy winner and her 36-year-old charity campaigner boyfriend Simon Konecki have followed a strict vegetarian diet for the past one month and have lost almost a stone. The couple goes for jogging every morning.

The weight is dropping off them and they plan to keep dieting until the end of April, the Daily Mail reported quoting a friend of the 23-year-old Grammy winner, who lives with Konecki in a rented £6million pile in West Sussex.

They are inseparable - they are losing weight together, getting fit together and planning a future together. Adele says she's doing her best work and feels healthier than she has for months, he added.

Adele has been working out with a personal trainer twice a week at her home and has reportedly quit smoking.

Adele has found so much more energy now she's quit smoking. She really wants to get healthier, now that she's half-way there, the Sun reported, quoting a source.

She had always been curious about taking up Pilates but until recently there just hadn't been any time.