One's dating Joshu-wow-a Jackson and the other’s dating Arctic Alex. One's bezza mates with Brad Pitt, the other counts designer Henry Holland and supermodel Agy Deyn as pals. And they both own this frothy-coloured frock from Chloe Sevigny's fashion line Opening Ceremony! Diane beat Alexa to it in terms of time – wearing hers with woven ballet pumps and a 3.1 Phillip Lim bag – while Ms Chung wore it with a belt 'n' boots on her US show It’s On With Alexa Chung (interviewing none other than Ms Kruger herself). Confused? Fret not, all we need to know is who looks best. Please and thank you.