Rihanna's baby daughter makes magazine cover debut

Rihanna's baby daughter, Rocki Irish Mayers, has made her first public appearance.

On Tuesday, editors at W magazine unveiled The Pop Issue, for which the Umbrella hitmaker poses with her third child on the cover.

Taking to Instagram to celebrate the moment, Rihanna declared that she and her seven-month-old daughter were officially "cover girrrrrlz (sic)."

"Baby Rocki served sumn serious on her first cover! came on set and shut her mama dowwwnn!!!!" the 38-year-old added.

Rihanna welcomed Rocki with partner A$AP Rocky last September.

The pair also shares sons RZA, three, and Riot, two.

Speaking to the publication, Rocky - real name Rakim Mayers - described the Barbadian superstar as "magic".

"Philosophically, the way she operates is on another level. She is the most charming and genuine person on Earth," he praised. "Her energy is unmatched - one of a kind. I just adore her."

Meanwhile, Dior creative director Jonathan Anderson confirmed that he designed the diaper and headpiece that Rocki wears for the cover image.

"The haute couture diaper is definitely a first for Dior. When Rihanna asks for something, she is already ahead of what is happening. She is thinking outside the box. When she has an idea, I'm always trusting in the process. I trust her implicitly on anything she feels that is right to do," the fashion star gushed.