Model-actress Lily Cole says she's expecting her first child with boyfriend Kwame Ferreira.

The 27-year-old used her own site, Impossible.com on Saturday, to share the news with a simple message written on a note along with a toy dinosaur, reports dailymail.co.uk.

`The first known impossible baby is being born,` she wrote alongside the photograph.

`I met Kwame when I was in the process of developing Impossible and he offered the most profound gift, to help build the platform.

`After working together for a long time Kwame and I fell in love, and I am very happy to share our news that we are expecting our first child together...,` she added.

Cole was seen covering up her baby bump earlier this week at the Elle Style Awards, where she donned a billowing pink dress.