Top marks this week goes to Jessica Chastain who has knocked it out of the park everyday fashion-wise, including wearing a metallic blue Roksanda Illincic dress last night, while promoting her new film Interstellar in which she stars with Matthew McConaughey and Anne Hathaway.
Another clothes horse of the week is Jennifer Lopez, who not only rocked a flirty Valentino look, she also managed to make head-to-white look chic, which she wore to an event celebrating the release of her new book True Love.
We of course also loved Cara Delevingne and Kate Moss' looks at the Printemps Christmas Decorations Inauguration in Paris. And speaking of Mossy, we've totally fallen in love with her (not that we weren't already but, you know, even more so) after we watched this video of her home and talking about editing this month's Vogue.
Anyway, enough of our babble. See all the best and most stylish celebrity looks of the week below.