Ooo baby, baby.

Pop star Beyoncé Knowles-Carter debuted pictures of her twins, Sir and Rumi, in an Instagram post Friday, July 14, that caused an instant internet storm.

“Sir Carter and Rumi 1 month today,” the 35-year-old mom wrote in the post, which showed her holding the two infants. 

The picture had been “liked” more than 6.5 million times nine hours after it was posted.

Her father, Mathew Knowles, made the first announcement confirming their birth when he took to Twitter on June 18 and said, “They’re here!”

According to several entertainment media websites, the babies were born June 12 in a Los Angeles hospital.

In the photo Beyoncé released, she’s wearing a blue veil and a colorful flowing robe that falls off her left shoulder.

Neither Beyoncé, one of the world’s most popular singers, nor her husband, 47-year-old rap star and entrepreneur Jay Z, had made any announcement about the birth until now.

The singer, one of the most powerful women in the music business, announced her pregnancy on her Instagram account in February, along with an image of her posing in lingerie and caressing a noticeable baby bump.

The photo became the most-liked Instagram picture of all time, with 11 million likes.

The couple has a daughter, Blue Ivy, who was born in 2012. Reports indicate that Jay Z has filed papers to try to trademark the twins’ names.

The couple ran into difficulty with similar attempts to trademark Blue Ivy’s name in 2012, and were blocked by an event company of that name which was founded in 2009. Earlier this year, the couple refiled for a trademark using the oldest child’s full name — Blue Ivy Carter. The event company is still attempting to block the trademark.

News of the twins came less than a year after the release of the R&B singer’s 2016 album “Lemonade,” in which she appeared to address long-standing rumors of trouble in her eight-year marriage. Jay Z’s own recent album, “4:44,” also dealt with the subject.

After a successful world tour of “Lemonade,” Beyoncé became the second highest-paid entertainer in the year that ended June 1, earning $105 million, according to Forbes magazine. Only Sean “Diddy” Combs topped her at $130 million.