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.
Jennifer Lopez
Out and about in New York promoting her new book True Love
Jessica Chastain
In Roksanda Illincic at the A Most Violent Year film premiere, AFI Festival, Los Angeles
Olivia Palermo
At the Disaronno Wears Versace launch event, New York
Coco Rocha
At the Tiffany T Train experience opening, New York
Karlie Kloss
At the Tiffany T Train experience opening, New York
Kim Kardashian
In Balmain out and about in Los Angeles
Lily Allen
Performing on The Jonathan Ross Show, London,
Greta Gerwig
Wearing Dior at the Guggenheim International Gala Pre-Party made possible by DIOR, New York
Zoe Kravitz
In Dior at the Guggenheim International Gala Pre-Party made possible by DIOR, New York
Liv Tyler
At the Prada presents The Lunchbox Fund's Fall Benefit Dinner, New York
Tali Lennox
At the Disaronno Wears Versace launch event, New York
Cara Delevingne and Kate Moss
At the Printemps Christmas Decorations Inauguration, Paris
Mary-Kate and Ashley Olsen
At the World Of Children Awards Ceremony, New York
Zoe Kravitz
At the Guggenheim International Gala Dinner, New York
Kate Beckinsale
At the Battersea Power Station Global Launch Party, Los Angeles
Reese Witherspoon
At the Wild film photocall, Los Angeles
Jennifer Lopez
In Valentino, out and about in New York
Victoria Beckham
Wearing Victoria Beckham at the Harpers Bazaar Women of the Year Awards, London
Beyonce Knowles
Wearing Topshop at the Topshop flagship store opening, New York
Nicole Kidman
Wearing Fendi at the BMI Country Awards, Nashville
Margot Robbie
In a yellow Rosie Assoulin gown at the Harpers Bazaar Women of the Year Awards, London
Jessica Chastain
At the Interstellar film premiere, Washington DC
Felicity Jones
In Jonathan Saunders at the The Theory Of Everything film screening, New York
Gemma Arterton
At the Made in Dagenham musical press night after party, London
Gwyneth Paltrow
At LAX airport, Los Angeles
Doutzen Kroes
At the WSJ Innovator of the Year Awards, New York
Kim Kardashian and North West
At LAX airport, Los Angeles
Lisa Kudrow
At The Comeback TV series screening, Los Angeles
Karlie Kloss
At the WSJ Innovator of the Year Awards, New York
Nicole Kidman
At the 48th Annual CMA Awards, Nashville
Joan Smalls
At the WSJ Innovator of the Year Awards, New York
Jennifer Connelly
At the WSJ Innovator of the Year Awards, New York
Gwen Stefani
Out and about in Los Angeles
Coco Rocha
At the K.I.D.S. Fashion Delivers Gala, New York
Lily Aldrige
At the 48th Annual CMA Awards, Nashville
Hailey Baldwin
At the Topshop Topman 5th Avenue store opening, New York
Cara Delevingne
At the Topshop Topman 5th Avenue store opening, New York
Alexa Chung
Out and about in New York
Anne Hathaway
On Good Morning America, New York
Cara Delevingne
At the Topshop flagship store opening, New York
Poppy Delevingne
At the Topshop flagship store opening, New York
Jourdan Dunn
At theTopshop flagship store opening, New York
Hailee Steinfeld
At the Topshop flagship store opening, New York
Hailey Baldwin
At the Topshop flagship store opening, New York
Audrey Tautou
At the 30th Anniversary of French TV Channel Canal , Paris
Eva Green
At the Campari Calendar 2015 launch, London
Olivia Munn
At the The Newsroom TV series screening, Los Angeles
Ciara
At the Topshop flagship store opening, New York
Rosie Huntington-Whiteley
Wearing Balmain at the Harpers Bazaar Women of the Year Awards, London
Alexa Chung
Wearing Stella McCartney at the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Emily Ratajkowski
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Stella McCartney
In Stella McCartney (obviously), at the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Karlie Kloss
In Jason Wu at the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Alessandra Ambrosio
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Melissa George
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Caroline Wozniacki
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Anne Hathaway
In Rodarte at the Interstellar film premiere, New York
Diane von Furstenburg
In Diane von Furstenburg at the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Joan Small
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Ashley Greene
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Serena Williams
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Jessica Hart
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Leigh Lezark
In Proenza Schouler at the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Rachel Roy
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Jenna Lyons
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Tory Burch
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Tory Burch's shoes
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York. Because these are amazing.
Jessica Chastain
Wearing a Prada dress at the premiere of Interstellar in New York
Camila Alves
In a Marchesa gown at the Interstellar premiere in New York
Vera Wang
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Sophie Ellis-Bexter
At the Burberry Festive Campaign, London
Greta Gerwig
In Tome at the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Atlanta de Cadenet Taylor
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York
Romeo Beckham
At the Burberry Festive Campaign, London
Kate Hudson
In Gucci at the LACMA: Art and Film Gala, Los Angeles
Kate Beckinsale
Wearing Gucci at the LACMA: Art and Film Gala, Los Angeles
Demi Moore
Wearing Zac Posen at the LACMA: Art and Film Gala, Los Angeles
Cara Delevingne
At the LACMA: Art and Film Gala, Los Angeles
Jennifer Lopez
At the LACMA: Art and Film Gala, Los Angeles
Cindy Crawford
Wearing Gucci at the LACMA: Art and Film Gala, Los Angeles
Amy Adams
At the LACMA: Art and Film Gala, Los Angeles
Kirsten Dunst
In Gucci at the LACMA: Art and Film Gala, Los Angeles
Florence Welc
At the LACMA: Art and Film Gala, Los Angeles
Kim Kardashian and Kanye West
In a Cushnie et Ochs dress, Tom Ford heels and Cartier necklace at the LACMA: Art and Film Gala, Los Angeles
Liberty Ross
At the LACMA: Art and Film Gala, Los Angeles
Rachel Zoe
At the LACMA: Art and Film Gala, Los Angeles
Jennifer Missoni
At the LACMA: Art and Film Gala, Los Angeles
Salma Hayek
At the LACMA: Art and Film Gala, Los Angeles
Evan Rachel Wood
Wearing Gucci at the LACMA: Art and Film Gala, Los Angeles
Michelle Rodriguez
At the LACMA: Art and Film Gala, Los Angeles
Selena Gomez
Wearing Gucci at the LACMA: Art and Film Gala, Los Angeles
Toni Garrn
In Gucci at the LACMA: Art and Film Gala, Los Angeles
Eva Longoria
In Marchesa at the Padres Contra El Cancer, Tao Beach, Las Vegas
Dakota Johnson
At the LACMA: Art and Film Gala, Los Angeles
Elisha Cuthbert
At the Stand Up For Pits event, Los Angeles
Kaley Cuoco
At the Stand Up For Pits event, Los Angeles
Heidi Klum
At LAX airport, Los Angeles
Solange
At the Birdcage On Derby Day At Flemington Racecourse, Melbourne, Australia
Lady Gaga
Out and about in Paris
Lily Aldridge
At the 11th Annual CFDA/Vogue Fashion Fund Awards, New York