Demi Moore arrived at the Trump International Hotel and Tower Dubai Launch in New York last June, wearing a cobalt blue Zac Posen Trickle halter dress with a large ruffle cascading down the skirt.

Demi carried a black clutch, whilst mixed her metals by wearing silver Ivanka Trump jewels, with gold peep-toe heels.

Actress Bijou Phillips wore the same dress in chartreuse, when she attended the New York Times Fashion Week Photo Diary by Eric Ray Davidson in LA last month.

I love the dress in both colours, but Bijou’s pewter accessories were consistent, so she wins this for me.

Net-A-Porter have the cobalt blue dress on their US site for $1,800, or the international site for £1,126/€1,498.30.