United Kingdom, July 19 -- Josh Duhamel has shared the moment he realised he was "too old" for his wife.

The 53-year-old actor has a much younger sister, Kassidy, and admitted seeing a baby photo of her drove home the size of the age gap between himself and 32-year-old Audra Mari - who he married in 2022 after four years of dating - because she and his sibling were born just "months apart".

Speaking on The HoneyDew With Ryan Sickler, Josh laughed: "Kassidy came along ... and I was playing football at Minot State University. Go Beavers!

"Warming up on the sideline. And I remember looking up at the stands, and I see my mom and [she] has this bump. And I'm like, 'What the- Is my mom pregnant?' ... I was 21 years old ... and she's having a...