Rod Stewart, 81, to become a grandfather for a fifth time as daughter Ruby, 38, reveals she's pregnant with her second child

Sir Rod Stewart's daughter Ruby has revealed she's pregnant with her second child after debuting her baby bump at the New Orleans Jazz & Heritage Festival where her famous dad, 81, performed last weekend.

The singer, 38, looked radiant in photos she posted on Instagram from the iconic festival, showing herself cradling her growing bump in a glamorous black patterned dress.

Ruby, who previously performed in the country duo The Sisterhood and has sung on stage with Rod, was joined at the star-studded event by her fiance Jake Kalick - with whom she also has a three-year-old son, Otis - half-sister Kimberly, 46, half-brother Liam, 31, and his wife Nicole.

But Ruby wasn't the only Stewart girl with baby news. 

In a stunning double bombshell, model Kimberly attended the annual event with the son she gave birth to last year. She has not been seen with him publicly before.

Making her Instagram debut with her youngest child, Kimberly posted a sweet selfie of herself on social media holding the youngster - with a blue heart emoji covering his face.

She has not revealed her son's name, nor has she revealed the identity of his father. She has a daughter Delilah, 14, with Oscar-winning actor Benicio del Toro, 59.

The Maggie May hitmaker now has five grandchildren with a sixth on the way - adding to his already sprawling family tree of eight children from five different women.

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.'

The socialite has previously gushed about motherhood, 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.'

Ruby's pregnancy marks her second child with partner Jake, a creative director whom she became engaged to in January 2023, just weeks after announcing she was expecting their first baby. When the couple welcomed son Otis, Ruby said: 'This love [is] unlike any other love I've ever known.'

The New Orleans Jazz Festival saw the Stewart clan turn out in force to support Rod as he performed on the Festival Stage last Sunday. 

Photos they shared on Instagram showed the family backstage at the Fair Grounds Race Course, with Ruby's bump clearly visible beneath her elegant dress.

The event, which runs over two weekends until May 3, has featured headliners including Stevie Nicks, Eagles, and Kings of Leon alongside Rod.

Rod, who has been married three times, shares his eight children with five different mothers. 

His eldest, Sarah Streeter, 62, was born to girlfriend Susannah Boffey and placed for adoption. He shares Kimberly and Sean Stewart, 45, with first wife, actress Alana Stewart, now 80.

Ruby is his daughter with model Kelly Emberg, whom he dated from 1983 to 1990. With his second wife, New Zealand supermodel Rachel Hunter, Rod had daughter Renée, 33, and Liam. Liam and his wife Nicole have two children, Louie and Elsie.

The singer's youngest children - Alastair, 20, and Aiden, 15 - are with current wife Penny Lancaster, 54, whom he married in 2007.

The rocker has previously opened up about fatherhood across the decades, admitting he wasn't as present for his older children due to his demanding career.

'I was working hard at my career when my eldest Kimberly and Sean were born,' he has said. 'I didn't see as much of those two as I would like to have. But I think they would probably say dad's made it up since.'

Speaking to People in November 2021, Rod acknowledged the challenges of parenting children born so far apart.

'I have to be several different fathers because of the different age groups of my kids,' he explained. 'You really have to treat all of them as individuals with individual problems.'