The singer in 2013 and 2020. Photo / Getty Images / Instagram
Adele's incredible transformation has transfixed the world, especially after it was revealed the "exercising hating" star has lost a staggering 45kg.
The British singer first debuted her new physique in October when she attended a birthday bash for the rapper Drake with friends.
Sharing a snap of the occasion to Instagram with her 33 million followers, the newly-divorced 31-year-old wrote: "I used to cry but now I sweat."
While those pics set the internet ablaze, just months later she wowed again with photos of herself in January frolicking on a beach in the Caribbean alongside singer Harry Styles.
It is no secret Adele has never been a fan of exercising; however, it seems her once-famous mantra of not "f***ing skipping to the gym" has been well and truly ditched.
Following her split with her husband of seven years, Simon Konecki, the star hired a personal trainer to work with her three times a week, according to US Weekly.
The singer's fitness routine includes weekly sessions of cardio and circuit training.
"She really wants to be healthy and set a good example for her son," a source told the magazine.
"She's more focused on feeling good and the health benefits than the weight loss."
Adele is thought to be working out with US trainer Dalton Wong, who also trains her friend Jennifer Lawrence – and following a Joe Wicks's Body Coach plan.
Camilla Goodis, a pilates instructor who trains Hollywood's elite also revealed Adele had started making inroads to changing her lifestyle in 2013.
The Brazilian instructor met the star in Los Angeles after Robbie William's wife Ayda Field asked if she would be interested in training "one of her best friends".
Ms Goodis said while Adele seemed to enjoy their session together, it was clear at the time she wasn't a fitness fanatic.
"I don't think she is a huge fan of exercise like Robbie and Ayda, who exercise five or six days a week. But whatever she is doing now, she looks amazing," she told The Sun.
As well as embracing fitness, Adele is reported to have followed the Sirtfood Diet for weight loss.
The Sirtfood Diet originated in the UK from nutritionists Aidan Goggins and Glen Matten, who published a guide and a recipe book in 2016, reported the NY Post.
The diet includes a range of wholesome, low calories foods, plenty of protein, fruit and green juice.
Participants are also allowed to indulge in dark chocolate, red wine and coffee on their days off.
The diet focuses on sirtuins or proteins in your body that specialise in cellular health and metabolism, among other things.
There is no denying the fact the singer's impressive weight loss and incredibly toned physique continues to spark interest.
But, her new look also has some asking whether or not she might be going too far, especially as she has recently been called "unrecognisable".
A recent snap at an Oscars after-party showed the star looking radiant in a fitted, beaded leopard print dress.
A photo shared on Instagram by Polish TV presenter Kinga Rusin shows Adele looking luminous with her flowing locks in an updo and the skin-tight dress hugging her curves.
But it left many astonished over her "tiny waist".
"She looked like herself but so different – beautiful but almost unrecognisable," a source told People.
Another insider who reportedly attended the bash said the star "looked striking and so tall" and "had a tiny waist and beautiful hourglass figure in a beaded leopard dress."