Cradled tenderly in the crook of her mother's arm, Blue Ivy Carter couldn't look any cuter.

At just over a month old, Beyonce and Jay Z's little star has lively, engaging eyes, an adorable rosebud mouth and thick hair like mum's.

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Photo: helloblueivycarter.tumblr.com

The gorgeous image, in which the singer wears blue nail varnish as a tribute to her baby, is one of several released by the pop royals. In another, the proud dad is seen showing off his daughter.

In a statement to fans, the A-list couple said: "We welcome you to share in our joy.

"Thank you for respecting our privacy during this beautiful time in our lives. The Carter Family."