Legendary rocker Sir Rod Stewart is set to become a grandfather for the sixth time as his daughter Ruby confirmed she is pregnant with her second child. She debuted her baby bump at the New Orleans Jazz & Heritage Festival last weekend where Rod, 81, was performing. The 38-year-old, who is already mum to son Otis, who will turn three on May 9, posted images in which she cradled her growing bump in a glamorous black patterned dress.

Her sister Kimberly, 46, also made a baby revelation at the event as she posted an image with her son, who she gave birth to last year.

The model posted a selfie of herself holding the youngster with a blue heart emoji covering his face.

Kimberly announced her pregnancy in March last year with a series of stylish photos on Instagram showing off her bump in a floral sundress, writing: 'Baby boy coming soon," however she has not revealed his name, or the identity of his father.

She has gushed about her daughter in the past saying of Delilah: 'I honestly never, ever thought that I could love anything as much as I love her.

"I had her at the right time. I got all the partying out of my system and I just wanted to be with her all the time.'

Alongside Ruby and Kimberly's children Rod has two other grandchildren. His ice hockey star son Liam, 31, shares son Louie, who is nearly three and daughter Elsie, 14 months, with wife Nicole Artukovich.