The mum-of-two announced earlier this month that she's expecting her third child with footballer husband Wayne Rooney.
But there was no sign of a baby bump in this image she shared to Twitter yesterday!
Taken at a friend's wedding, the fashion designer looked beautiful in a fuchsia-coloured, off the shoulder frock that highlighted her incredible tan. It was created by one of her favourite fashion designers, Philip Armstrong.
Coleen has been keeping a low profile since 9 July when she announced that baby number three was on the way!
At the time, she said that she and Wayne were "so happy and excited" to be welcoming another child in January. They're already parents to sons Kai, five, and Klay, two.
Check out some of the best maternity fashion below: