Ignoring the chilly temperatures in the capital and showing us all exactly why she's a model, the mother-of-one sizzled in a halterneck gown with thigh high slit.
How very Angelina Jolie!
Imogen looked utterly sensational in her striking gown, teamed with a neon orange clutch bag and golden glow. (Has she been abroad on some holiday we don't know about?!)
She finished her picture-perfect evening look with an elegant updo and seriously smokey eyes.
Imogen was among the guests attending The Kensington Christmas Party, which fundraises for Shooting Star Chase Children's Hospice Care.
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