Beyonce has revealed how she lost 60 lbs after she gave birth to daughter Blue Ivy nearly five months ago.

During her second concert last night of her four-date stint at Revel Beach Ovation Hall in Atlantic City, Beyonce told the audience about her post-pregnancy regime.

“Y’all have no idea how hard I worked,” she told her fans.

“I had to lose 60 pounds. They had me on that treadmill. I ate lettuce!”

During her second concert last night of her four-date stint at Revel Beach Ovation Hall in Atlantic City, Beyonce told the audience about her post-pregnancy regime

And the fruits of her labor were evident as Beyonce showed off her trim and toned physique in a series of revealing stage costumes.

Now that the singer has returned to the stage and is back in fighting form she revealed that she was going to treat herself.

“Now tonight I’m gonna get chocolate wasted!” Beyonce exclaimed as reported by Us Weekly.

Beyonce, who is married to rapper Jay-Z, wore a series of custom-made Ralph & Russo designs.

It’s been nine months since Beyonce last performed for her adoring fans.

Taking to the stage in New Jersey last night for the first time since giving birth to daughter Blue Ivy, it appeared her time out for motherhood hasn’t affected her stage presence.

Beyonce had a few famous people in the audience including First Lady Michelle Obama and her two daughters: Malia, 13, and Sasha, 10.

Also supporting her from the wings was her rapper husband Jay-Z, who recently returned from the London leg of his Watch The Thrones tour with Kanye West.

Under his Twitter name Mr. Carter, Jay-Z wrote: “I’m gonna say this and then I’m gonna end mine. BEYONCE is the best performer in the world. Period.”

Speaking to the 5,500 fans at the Ovation Hall in the Revel, Beyonce said: “I gotta say, it feels so good to be back home on stage.”

However, she didn’t bring up her new life as motherhood too often, except for a fleeting glimpse of Beyonce cradling her daughter in a video montage on the screen behind her.

During the set, Beyonce performed a selection of her biggest hits, including Crazy In Love, Love On Top, Irresistible and If I Were A Boy.

The singer paid tribute to the late Whitney Houston with a cover of I Will Always Love You and closed the concert with Single Ladies (Put A Ring On It).