80, has become a grandfather for the fourth time, as his son Liam Stewart, 30, welcomed his second child with his wife, Nicole Stewart, yesterday. The rocker introduced the world to his granddaughter, Elsie, by sharing an adorable photo of himself cradling the newborn alongside his wife, , 56.

The pair looked thrilled as they cuddled the newborn in the sweet snap, as they were seen putting their heads together and smiling at the camera. In the caption, Penny expressed her joy, saying, "So proud to meet little Elsie, what an angel. Nicole, Liam, and Louie have welcomed their baby girl into their new home, and they are so harmonious." Fans quickly flooded the comments section, expressing their admiration for the glamorous grandparents, who are frequently seen spending time with their large blended family, and are set to be grandparents for the fifth time later this year.

One wrote: "How beautiful is baby Elsie and how lovely she's called after Rod's mum her great grandmother."

A second remarked: "Wow, how delicious. So beautiful. Congrats all xxxxx."

And a third added: "Suits you it's never too late."

Meanwhile, Sir Rod proudly reposted the image on his social media to his 1.5 million followers, with the caption: "Another Stewart joins the clan."

In response to the overwhelming outpouring of celebration, Nicole wrote: "Thank you for the visit and for spoiling our little ones with so much love today!"

It comes at an exciting time for the Stewart family, as yesterday Penny shared a photo of Rod's eldest daughter Kimberly, 45, who is pregnant with her second child.

The 45-year-old model shares a 13-year-old daughter named Delilah with her ex, Benicio Del Toro.

Kimberly announced her pregnancy with the caption: "Baby boy coming soon."

Sir Rod will certainly have his hands full as he juggles his expanding family while continuing to perform in Las Vegas.