Marie Boswell, 35, says friends and family have been amazed by her son's distinctive 'ok' sign in the 20-week scan taken at Wythenshawe Hospital.
Marie, of Wythenshawe, Manchester, said: "It's really funny, the thumb is so clear - we can't believe it.
"I have big hands but nothing on the scale of his - he looks like he's wearing boxing gloves! We're thinking he might make a good goalkeeper.
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