Stuck on what to wear this week? Well, over the course of 24 hours this weekend, Rihanna and Lorde proved that the slip dress is the one thing worth digging out of your wardrobe. Pre Met Gala, RiRi downplayed hers with Puma kicks, shades and a purple patent LV bag, while Lorde, after a Met bash, made a sleek exit in a '90s-lookin' slip with mules that would have looked at home in Kate Moss' wardrobe. This is one bandwagon worth getting on pronto. 

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