Emily Blunt and Sienna Miller looked effortlessly glamorous as they attended a Calvin Klein event in Cannes, see the pics here.

The actresses attended the Independent Filmmaker Project, Calvin Klein Collection and Euphoria Calvin Klein 'Celebrate Women in Film' event in Cannes where they opted for simple nude dresses and minimal makeup.

Blunt chose a nude full-length column gown with halterneck detailing, wearing her hair pulled back off her face.

Miller went for a glamorous shimmering midi-length dress with a daring low back, pairing it with silver strappy heels.

Actors Jake Gyllenhaal, Rachel Weisz, Melanie Laurent and models Doutzen Kroes and Lily Donaldsen were also in attendance, check out the pics below.

Sienna Miller, Emily Blunt

Emily Blunt

Sienna Miller

Jake Gyllenhaal, Sienna Miller

Rachel Weisz, Melanie Laurent, Emily Blunt and Sienna Miller

 Sienna Miller, Francisco Costa and Emily Blunt

 Sienna Miller, Francisco Costa