The Hello superstar quit smoking and cut down on her alcohol intake after undergoing vocal cord surgery in 2011, and she debuted her slimline new figure in November (15) as she returned to the spotlight with her smash hit new album, 25.

"I've never been happier and I've never been healthier, so I'm good," she beamed on U.S. breakfast show Today in December (15).

Although her weightloss has done wonders for her health, Adele, who is set to kick off her world tour at the end of this month (Feb16), confesses she has since become addicted to fashion and is struggling to curb her new love of shopping.

"I was trying to get some stamina for my tour," the 27-year-old told the new issue of Vogue magazine. "So I lost a bit of weight."

"Now I fit into normal, off-the-shelf clothes - which is a really big problem for me!" she laughed.

Adele goes on to admit she has mixed feelings about hitting the road on an upcoming tour, and she is only performing to please her fans, who have helped propel her to superstardom.

"I'm only touring for the fans, to see the people that changed my life," she explained of confronting her pre-show anxiety issues for the trek. "There's no need for me to tour. I'll always be nervous, worrying whether I'm going to be good enough. And the adrenaline is so exhausting."

Meanwhile, Adele reveals she would happily become a teacher if her music career ever comes to a halt, crediting Tony Castro, her mentor at London's famous BRIT School performing arts centre, with inspiring her to tap into her emotions and write original material.

"If it wasn't for him, I probably wouldn't have written Hometown Glory and Daydreamer," she said. "I think being a teacher is one of the most important jobs in the world. If my career stopped, it's what I'd do."

Adele will perform a fan-only show at The Wiltern in Los Angeles on Friday night (12Feb16), ahead of her spot at the Grammys on Monday (15Feb16).