Beyonc posts first picture of her twins on Instagram

Pop star Beyoncposted the first pictures of her twins, Sir Carter and Rumi, in an Instagram post on Friday.

"Sir Carter and Rumi 1 month today," Beyoncwrote in the post.

Beyonc's father had said in a tweet in June that his daughter was now the mother of twins, confirming earlier reports of the year's most highly anticipated celebrity birth.

Social media was abuzz in February when the 35-year-old singer, whose full name is BeyoncGiselle Knowles-Carter, posted a photo of herself wearing a long veil and lingerie and caressing a noticeable baby bump.

The announcement got more than 8 million "likes" in the first 24 hours.

Two weeks later, the R&B singer performed live at the Grammy awards in Los Angeles, proudly displaying her swelling belly in a motherhood-themed show. She has since posted numerous pictures of her bare baby bump on her social media accounts.

• Beyonc bares all in pregnancy photo shoot

The birth of the couple's first child, Blue Ivy, caused a paparazzi storm in 2012 with New York's Lenox Hill hospital shutting down part of its maternity wing to accommodate music's royal couple.

News of the twins came less than a year after the release of Beyonc's 2016 album Lemonade, in which she appeared to address long-standing rumours of trouble in her eight-year marriage to rapper Jay-Z.

Jay-Z has since spoken about his infidelity during publicity for his new album.

• Rapper Jay-Z talks marriage troubles on new album, 4:44