Beyonce's daughter Rumi, six, makes a RARE appearance in photo with Madonna and her children backstage during Renaissance World Tour

Beyonce's six-year-old daughter Rumi starred in a rare public photo that appeared on Madonna's Insta Stories on Monday. 

Madonna had taken three of her own daughters - Mercy, 17, and twins Stella and Estere, 10 - to see Beyonce live in concert that evening.

A superstar summit convened backstage, where Madonna gathered her girls together to pose for a picture with Beyonce and Rumi.

Rumi, her twin brother Sir, and her 11-year-old big sister Blue Ivy are Beyonce's children by her longtime husband Jay-Z.

Wrapped in her dressing gown but still in full hair and makeup, Beyonce beamed proudly behind her younger daughter in the backstage snap with Madonna.

Beyonce paid tribute to the Material Girl during the evening's concert, blasting the words: 'QUEEN MOTHER MADONNA' up in lights onstage.

Madonna clicked a picture of the homage and uploaded it to her Insta Stories, where she duly showered praise on Beyonce.

'Thank you Queen B,,' wrote the Express Yourself singer: 'for your Magnificent show! My Daughters were enthralled! We Love you!'

Sir and Rumi were born in June 2017 after a turbulent pregnancy that saw Beyonce suffer from pre-eclampsia and undergo an emergency cesarean.

Rumi was named after a 13th century Persian poet whose romantic and philosophical verse is still celebrated all over the world.

Meanwhile Madonna adopted her four younger children - Mercy, Stella and Estere, as well as a son called David Banda, 17 - from Malawi.

Madonna had her eldest daughter Lourdes in 1996 with her then-boyfriend Carlos Leon, a fitness trainer who has apparently remained friends with the Queen Of Pop.

Lourdes, who often goes by Lola, has followed in her mother's footsteps and become a singer, releasing singles with such names as C**tradiction.

Madonna also has a 22-year-old son called Rocco Ritchie by her ex-husband, the smolderingly handsome English filmmaker Guy Ritchie. 

Her appearance at Beyonce's concert comes a month after Madonna suffered a dramatic health crisis that struck terror into the hearts of her global fanbase.

She was confined to the ICU for several days after contracting what her manager announced was a 'serious bacterial infection.' 

Last week Madonna marked one month since she was discharged from the hospital -offering her a chance to 'reflect' on her ordeal.

'Love from family and friends is the best Medicine,' she wrote. 'As a Mother you can really get caught up In the needs Of your children and the seemingly endless giving……….. But when the chips were down my children really showed up for me. I saw a side to them I had never seen before. It made all the difference.'