Posing for a photo on Instagram, Jaime pulled up her sweater and proudly stuck her tummy out. Her 58-year-old dad mimicked his pregnant daughter's pose, embracing his own curves and poking fun at himself.
"It's a bump off, miss you already papa xxx," wrote Jaime.
Jaime Winstone is due to give birth in February
The picture may well have been taken over the Christmas holidays when Jaime was at home spending time with her family.
The Winstones are set to welcome their new addition soon, as the Love, Rosie actress is due to give birth in February.
This will be the first child for Jaime and her DJ boyfriend James Suckling. The pair, who started dating in March last year, have not revealed the gender of their baby.
The 30-year-old said: "A role as a mummy was going to be my main calling in life"
Speaking exclusively to HELLO! magazine, the 30-year-old said that her father Ray and her mother Elaine are thrilled at the prospect of becoming grandparents.
"Mum and dad are ecstatic," she said. "After the news had sunk in, they were the first people I called. When I told them they were going to be grandparents, they both burst into tears. It was so cute.
"Dad can't wait to meet his grandchild. It's a beautiful time for us as a family and it's brought us even closer than we already were."
Jaime, who is best known for starring in TV show Kidulthood, added: "I really feel this is the next chapter for me and I've never been happier. Growing up, I always had a strong feeling that I wanted to be a mother. Whichever way my life went, I guess I felt that a role as a mummy was going to be my main calling in life."