So it was only a matter of time before the Welsh model posed for what is fast becoming an obligatory nude photoshoot for pregnant celebrities.
The former Big Brother contestant, 30, shows off her huge bump, with her arms protecting her modesty.
In an interview with this week's New! magazine, Imogen admitted her fears about giving birth and her changing body during her pregnancy.
She said: 'I've been feeling a bit low and uncomfortable about putting on weight - I didn't feel sexy any more.
'I've gone from 9st to 11st. I've noticed my arms have gone a bit bigger and I saw a photo of myself the other day with a double chin, but it's water retention so once the baby's out, hopefully it'll all go.'
Imogen and her Australian boyfriend Adam Horsley, 26, announced her pregnancy in August, with the baby due on Valentine's Day.
