The superstar singer looked stunning in a revealing emerald gown

BEYONCE let slip one of her secrets for looking as incredible as she does – Spanx.

The superstar singer took a well-earned break from motherhood and charity work by attending Rihanna’s Diamond charity ball with husband Jay-Z, and was pictured letting the cat out of the bag in her stunning ball gown.

Beyonce and husband Jay Z made their first official public appearance since they welcomed their new twinsCredit: Getty – Contributor

The loved-up couple posed together at the eventCredit: Getty – Contributor

Wearing an emerald gown, slit to the thigh on one side, Beyonce smiled for fans outside the eventCredit: Splash News

Queen Bey beamed as she walked out of her carCredit: Splash News

The Halo songstress wore her hair in blonde loose curlsCredit: Splash News

The mum of three wowed in her emerald green lookCredit: Splash News

Wearing an emerald gown, slit to the thigh on one side, Beyonce smiled for fans outside the event.

But after heading home alongside her rapper superstar husband, the new mum, who gave birth to twins Sir and Rumi three months ago, flashed her one-legged Spanx.

It marks the singer’s first official public appearance since the birth at a glamorous event, however, she recently visited her hometown of Houston to help with relief efforts after the devastation caused by Hurricane Harvey.

She was pictured being busy dishing up food and hugs to the survivors of the storm after returning to her home town to help the thousands of residents left homeless following the terrifying natural disaster.

The popstar was joined by her mum, Tina, and former Destiny’s Child bandmate Michelle Williams as they loaded grub into white trays and handed them out to the residents who fell victim to the mass floods.

The mum-of-three, who gave birth to twins Sir and Rumi in June, had a cheerful smile on her face and wore a casual denim jacket with a white vest top as she got stuck into the mammoth task.

Beyonce cosied up to Rihanna at the ballCredit: Getty – Contributor

The singer played games with masks of her own faceCredit: Getty – Contributor

She presided over the galaCredit: Getty – Contributor

Jay Z also posed for photographers inside the bashCredit: Getty – Contributor

Rihanna also posed for pictures with her collaborator Jay ZCredit: Getty – Contributor

The Bajan beauty also posed with Dave Chappelle at the galaCredit: Getty – Contributor

Jamie Foxx was also at the bashCredit: Getty – Contributor

The Oscar-winning actor chatted away with the legendary rapper at the partyCredit: Getty – Contributor

Calvin Harris also attended the star-studded fundraiserCredit: Getty – Contributor

She was seen pulling on plastic gloves and standing alongside a cute youngster as she got to work, before concentrating on loading the boxes up into huge piles.

Halo singer Beyonce, 36, shared a giggle with a fellow volunteer as they attempted to keep spirits high in the food camp.

She shared an image of hundreds of hungry Houston residents queuing up for a meal as she highlighted the severity of the environmental disaster.

Queen Bey, who yesterday visited a church to share her messages of support for the victims’ families, also took time to pose for selfies with staff.

The secrets to Beyonce’s flawless look has been let slipCredit: Splash News

Her Spanx were visible as she left the eventCredit: Splash News

The control pants were pictured by photographersCredit: Splash News

The control garment is perfect for a leg dropCredit: Splash News

The star looks sensational in her gownCredit: Splash News

She was flanked by two police officers as they joined forces for a group shot before taking centre stage with a host of volunteers.

As well as offering out food, the stunning singer was also seen giving a number of Americans huge bear hugs.

She wrapped her arms around a lady and was seen with a warm expression on her face as she rounded off her busy day.

She went to the very church where she first sang as a child and talked to the congregation, thanking them for helping her family and saying: “I have been blessed to I can bless other people”.

The flooding has ripped through communities in Houston forcing people out of their ruined homes and into shelters, with poor communities particularly challenged.

Queen Bey put on a united front with her husbandCredit: Getty – Contributor

Beyonce put on a busty display as she walked into the ballCredit: Getty – Contributor

But Beyonce emphasised that she was there to “celebrate survival” as she thanked those she met for “lifting [her] family up”.

She told gathered residents at St. John’s United Methodist Church: “I just wanna say that I’m home. This church is my home.

“I was maybe nine or ten years old the first time I sat there where my daughter is sitting.

“I sang my first solo here and I just wanna thank you for lifting my family up, for praying for me, and for being such an incredible example of what light and love is.

“This today is a celebration of survival. Ya’ll are my family. Houston is my home. I thank God that you’re safe, your children are safe…

“I think that really matters is your health and your children and your family. I just wanna say I love you.

“I’ve been blessed so that I can bless other people and I ask of God to continue to do that for other people,” she added.