text: Since hitting the big time singer-songwriter Sam Smith has undergone something of a transformation. Over the past year the London-born artist, 22, has dropped three stone by following a dairy-free, low-carb and low sugar diet, and is now barely recognisable. The chubby, suit-wearing soul singer has gone and been replaced with a new body confident Sam, complete with designer stubble and a trendy new wardrobe. Scroll down for video . Sam Smith is looking better than ever after losing three stone over the last year, he regularly posts pictures of himself to his Instagram account . And his new fashionista status has been crowned with  Sam being named Vogue's April 'Today I'm Wearing' star. It's a coveted month-long role which sees the popstar share his outfits with the fashion magazine's readers each day. So far he's modelled looks including Topman skinny jeans, a custom Burberry shirt and a well-cut Emporio Armani cashmere jacket. The pictures reveal a newfound confidence in his slimline look, the result of a dietary regime by nutritionist Amelia Freer that has 'transformed' his relationship with food. Posting a picture of himself holding Freer's book Eat Nourish Glow on Instagram, the Grammy award-winning singer said: 'Three weeks ago I met a woman who has completely changed my life.' His diet has been so successful that he revealed that he even lost over a stone in just two weeks. Performing at the Brit awards last year Sam had a fuller figure and face . He continued: 'Amelia Freer has helped me lose over a stone in two weeks and has completely transformed my relationship with food. 'It's not even about weight loss it's about feeling happy in yourself. Love you Amelia & thank you for making me feel so happy inside and out @ameliafreer #eatnourishglow' In a previous interview with the Guardian in which Sam was described has having an appearance like an, 'HGV driver,' he said he would always struggle with his weight - despite his recent triumphs over the scales. Freer is an advocate of cutting out gluten and sugar (apart from fruit), processed food is a big no-no and every meal should include protein, fat and vegetables. She is against cereal and even recommends tucking into broccoli for breakfast. Almond milk, avocados and coconut oil are staples of her kitchen cupboards. Sam Smith is the star of Vogue.co.uk's Today I'm Wearing, posting pictures of his outfits each day. He kicked the month off with a Fred Perry T-shirt, an Emporio Armani jacket and Topman jeans . The quiff-loving singer models a vintage denim shirt, over jeans, brogues and a parka by Burberry, in his April 7 outfit photo for Vogue.co.uk's Today I'm Wearing... slot . Sam shared his weight loss journey on Instragram revealing that his newly svelte figure was down to nutritionist Amelia Freer . As well as changing his diet, Sam is also reported to have taken up yoga and weight training to tone his frame. The singer, who claims he was very 'big' as a teenager, has said:  'I think I prefer food to singing.' He also admitted that he was self conscious about his body type, adding: 'I'm always going to have issues with my weight.' He also revealed in the interview that he felt that he had failed to become successful as a teenager because of his size. But the popstar seems to be making light work of his new regime and has been posting photos of his nutritious meals to Instagram. Sam posted this picture of himself to Instagram from when he was at school, making light of his bigger size . Sam has been seen out and about in recent months showing off his weight loss in some stylish outfits . Sam posted this picture of a delicious and healthy looking meal to Instagram after taking a nutritionists advice on his diet . Of course it is not unusual for a popstar to undergo a transformation after hitting the big time. Take, for example, DJ Calvin Harris who is practically unrecognisable from the straggly haired performer he once was. Over recent years the 31-year-old Scot, who is currently thought to be dating Taylor Swift, has got a smooth new haircut and a muscular physique. Sam's new look is certainly earning plaudits from fans. When he revealed his weight loss, one commented the picture: 'Hi Sam, you look really good! Keep up the good work.' And another said: 'You always look good and you are an awesome singer!' In his bigger days Sam would cover up in large over-sized jackets, however, he is now happier to wear more form-fitting clothes .
target: Musician Sam Smith, 22, has lost three stone over the last year .
  British singer has followed Amelia Freer's advice and slimmed down .
  Now a fashion icon, he's sharing his daily clothes diary with Vogue .