Jordin Sparks cried when she saw herself looking slim on the cover of a magazine.

The American Idol star has recently shed 50lbs., which she marked by posing in a bikini for Shape magazine’s August edition.

The singer says seeing how her new approach to exercise and healthy eating had paid off was an emotional experience.

"I could only dream having a cover and looking like that," Jordin told US Weekly. "I thought, 'I did it!' I had to walk back to my dressing room and I had to pull myself together because I was overwhelmed. I cried. I shed a little tear but I'm really happy with how it turned out."

The 22-year-old singer admits to being a fan of food but it isn’t the most important thing in her life. She recently found room in her heart for a boyfriend in the shape of fellow singer Jason Derülo. The couple have been dating since August last year and since then Jordin seems to have reassessed what she is most important in life.

"I stop now when I'm full," she revealed about her attitude makeover. "I love food and I love to eat. My thing was, do I really need seconds or do I want it just because it tastes good? There is no secret, it’s just eating better and working out! It's definitely a daily thing."