Beyonce, Jay-Z made first public debut hours before twins

Hours before dropping the first image of her twins on Instagram, Beyonce and JAY-Z made their super low-key public debut, it has been revealed.

The duo managed to sneak out to an event celebrating Roc Nation artist Vic Mensa in L.A.

Musician Jeff Kravitz took to his Twitter page to share a picture of the rapper, captioning it as, "Jay-Z back on the mic at the listening party for @VicMensa new album. He hosted & then watched everyone party with @Beyonce from backstage."

A source revealed that the 35-year-old singer seemed "relaxed and smiled often as she grooved to Mensa's performance," E! Online reported.

The insider added that she seemed to be having a good time dancing in place and was affectionate with her rapper husband.

The couple left the party through the back door after an hour with the help of a few security guards.

Earlier in the day, the 'Halo' hit-maker shared the first photo of her twins. She posed with both babies in her arms as she was draped in a ruffled multicolored print robe, blue bottoms and a blue veil.

"Sir Carter and Rumi 1 month today," the mom captioned.

"So Happy my baby shared a photo of her babies with the world," Beyonce's mother Tina Lawson wrote on Instagram.