Beyonce's Mom And Blue Ivy Do '4:44' Freestyle

(Radio.com) Proud grandmother Tina Knowles Lawson just welcomed two new grandkids to the family, but the Destiny's Child matriarch made some quality time for JAY-Z and Beyonce's firstborn, Blue Ivy.

The fashion designer and Instagram star shared a video of herself rapping along to Blue's verse on 4:44, Jay's new album. "Boomshakalaka," she captioned the post.

"'I never seen a ceiling in my whole life!' Blue Ivy Carter spittin out them rhymes This song is on Her dad's new Album. Its a bonus track !" The video is one part boastful grandma, one part album promotion: It's a line Tina walks with grace and ease. Watch the funny video here.

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