Penny and Rod were attending the 40th birthday party of his daughter Kimberley and the guest list made for a Who's Who of Rod's baby mammas.
Posing for a picture with Rod and Penny were his exes Alana Stewart, Kelly Emberg and Rachel Hunter.
The four blondes looked happy to surround Rod as he took centre stage in his fancy waistcoat and shoes.
Captioning the image "a mother's reunion", Kelly posted the shot to Instagram and alluded to the fact that Rod has children with all of the women in the photograph.
I have been a Rod fan for a very long time. I’ll just say he’s been an extremely fortunate man! You all look amazing!
Fans were quick to comment on the picture, branding it "just great".
One said: "How lovely to see all you all together being mums, wives and grandmothers – just great."
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Another added: "I have been a Rod fan for a very long time. I'll just say he's been an extremely fortunate man! You all look amazing!"
One also said Rod has "excellent taste in women".
His first marriage was to Alana. He married her in 1979 and they split in 1984. She is mum to his kids Kimberley and Sean.
Next came daughter Ruby with girlfriend Kelly.
Rachel married the singer in 1990. They split in 2006, but not before they'd had kids Renée and Liam.
Rod has two sons with Loose Women panellist Penny – Alastair and Aiden. They married in 2007.
Susannah Hourde, who had daughter Sarah with Rod before he was married, was absent from the line-up.
Current wife Penny appeared cool, calm and collected in the photo – a far cry from the road rage incident she recently spoke about, where she revealed she kicked a bus driver in the face and broke his nose.
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