From Gigi and Kendall, to Julianne Moore and Kate Bosworth, we've rounded up the most fabulous A-list outfits working their way down the red carpet this month.
Check out the best dressed celebrities for September 2017.
Advertisement - Continue Reading Below
1
Rihanna
Rex
Rihanna wore a black Calvin Klein babydoll dress to attend the Paris Fenty Beauty launch.
Advertisement - Continue Reading Below
2
Jourdan Dunn
Rex
Jourdan Dunn wore a black and gold Naeem Khan dress to attend the 2017 AmFar Gala.
Advertisement - Continue Reading Below
3
Hailey Baldwin
Rex
Hailey Baldwin wore a green Missoni maxi dress to attend the 2017 AmFar Gala.
Advertisement - Continue Reading Below
4
Reese Witherspoon
Rex
Reese Witherspoon wore a Stella McCartney LBD to attend the 'Home Again' London screening.
Advertisement - Continue Reading Below
5
Margot Robbie
Rex
Margot Robbie wore a floral Brock Collection maxi dress to attend the 'Goodbye Christopher Robin' premiere.
Advertisement - Continue Reading Below
6
Rihanna
Rex
Rihanna wore a lilac Molly Goddard tulle dress to attend the London launch of her Fenty Beauty range.
Advertisement - Continue Reading Below
7
Poppy Delevingne
Rex
Poppy Delevingne wore a beaded Chanel dress to attend the Kingsman: The Golden Circle world premiere.
Advertisement - Continue Reading Below
8
Channing Tatum And Jenna Dewan Tatum
Rex
Channing Tatum attended the premiere of his latest film Kingsman: The Golden Circle with wife Jenna Dewan Tatum dressed in Zac Posen.
Advertisement - Continue Reading Below
9
Halle Berry
Rex
Halle Berry wore a sheer Elie Saab gown to attend the Kingsman: The Golden Circle world premiere.
Advertisement - Continue Reading Below
10
Julianne Moore
Rex
Julianne Moore wore silver Tom Ford to attend the world premiere of Kingsman: The Golden Circle.
Advertisement - Continue Reading Below
11
Emily Ratajkowski
Rex
Emily Ratajkowski wore vintage Chanel to attend Rihanna's Diamond Ball.
Advertisement - Continue Reading Below
12
Rex
Stranger Things actress Natalie Dyer wore a red Preen by Thornton Bregazzi dress to attend the Audi Emmy party.
Advertisement - Continue Reading Below
13
Rihanna
Rex
Rihanna wore a black Ralph & Russo gown to attend her third annual Diamond Ball that raises money for the Clara Lionel Foundation in New York.
Advertisement - Continue Reading Below
14
Angelina Jolie
Rex
Angelina Jolie wore a grey Dior gown to attend the First They Killed My Father New York premiere.
Advertisement - Continue Reading Below
15
Emma Stone And Jennifer Lawrence
Rex
Emma Stone wore a sheer black Valentino dress to hang out with friend Jennifer Lawrence after the Mother! New York premiere.
Advertisement - Continue Reading Below
16
Keira Knightley
Tabitha Simmons
Keira Knightley wore Tabitha Simmons heels to attend the 13th BGC Annual Charity Day.
Advertisement - Continue Reading Below
17
Angelina Jolie
Rex
Angelina Jolie wore Ralph & Russo couture to attend the 'First They Killed My Father' Toronto Film Festival premiere.
Advertisement - Continue Reading Below
18
Brie Larson
Rex
Brie Larson wore Schiaparelli Couture to attend the 'Unicorn Store' Toronto Film Festival premiere.
Advertisement - Continue Reading Below
19
Chloe Sevigny
Rex
Chloe Sevigny wore Vivienne Westwood to attend the 'Lean On Pete' Toronto Film Festival premiere.
Advertisement - Continue Reading Below
20
Angelina Jolie
Getty Images
Angelina Jolie wore a white Givenchy top and matching trousers to attend the Toronto International Film Festival.