The 31-year-old singer was pictured running errands in Los Angeles wearing an all-black outfit consisting of a long-sleeve top, leggings, sneakers, and a Nike hat.
The new sighting comes just days after Adele stunned fans with her tiny waist in a fitted dress at the Vanity Fair Oscars after-party.
Polish TV presenter Kinga Rusin shared a party snap with the newly slimmed-down star, who looked sensational in a fitted sparkly leopard-print dress with elaborate updo.
Fans first started noticing Adele’s weight loss when the notoriously private singer shared a picture of herself in October at Drake’s birthday party.
“I used to cry but now I sweat #gingermckenna Happy birthday to one of the kindest and funniest people I’ve met @champagnepapi,” she wrote alongside a photo of the pair on Instagram.
Over the Christmas period, pictures then surfaced of a trim-looking Adele hanging out with her friends – including Harry Styles – on a beach in Anguilla, in the Caribbean.
Following her split from husband Simon Konecki last year, 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.”
It’s also been widely reported that Adele is following the Sirtfood diet, which includes a range of wholesome, low calories foods, plenty of protein, fruit and green juice.