JAY-Z and Beyoncé. Picture: Instagram

JAY-Z has reportedly changed his tour plans because of the arrival of his new twins.

The 47-year-old rap star's wife Beyonce gave birth earlier this month and their arrival has convinced Jay to delay the tour for his much-anticipated '4:44' album, which is slated for release on June 30.

A source said: "There is a tour to follow. It was originally planned for summer but has been moved to fall because of the kids."

READ: JAY-Z announces new LP and film 4.44

Typically, an artist would tour with their new material within a month of releasing their album.

But Jay has instead decided to prioritise his family life, amid reports that the twins arrived prematurely.

A source told the New York Post's Page Six column: "You usually tour within a month or so of the album."

Beyonce and Jay – who also have a five-year-old daughter called Blue Ivy – have remained tight-lipped about the arrival of their twins.

But the 'Formation' hitmaker's father, Matthew Knowles, recently confirmed the arrival of her new children via social media.

Taking to Twitter, Mathew posted a picture of a birthday note which read: "Happy Birthday to the twins! Love, Granddad."

And he captioned the snap: "They're here!#beyonce #twins #jayz #happybirthday (sic)"

Mathew also posted the same picture on his Instagram account, which featured the same caption.

Beyonce's mother Tina Knowles hasn't been able to contain her excitement either.

READ: Bey’s dad confirms twins arrival.boy & girl?

Speaking prior to the birth, Tina admitted: "I'm so excited. I can't wait."

The fashion designer also praised her daughter's parenting skills.

She said: "[Beyoncé and JAY-Z are] incredible parents. She's a really good mom. Really patient and kind.

"[My biggest lesson was] teaching them that what is on the inside counts more than what's on the outside. I see her passing it on, and it makes me really proud because that was my biggest lesson."