Finally: A New Legging Outfit Idea, Courtesy of Sienna Miller

We know, we know—it's all about bike shorts these days. But the fact of the matter is that it's there's already a chill in the air, and shorts aren't exactly conducive to warmth, which is why it's time to pull out the ole leggings again. That's exactly what Sienna Miller just did in NYC, where temperatures are currently in the low 50s. Lo and behold, just when we thought we'd seen every cool fall legging outfit combination imaginable, Miller stepped out in one that actually feels fresh (which shouldn't exactly be surprising, given her impeccable style skills).
Miller ditched the typical hoodie-and-sneakers look, instead opting for a cute newsboy hat, bomber jacket, sweater, and Birkenstock clogs with her leggings. It's the sort of easy, cozy outfit that we'd gladly wear at some point during every fall weekend, whether or not we're heading to or from a workout. Keep scrolling to shop the pieces you need to copy Sienna Miller's legging look.
On Sienna Miller: Brixton Ashland Fisherman Cap ($42); Ellie Mae Esmeralda Sweater ($265); Birkenstock Boston Genuine Shearling Lined Clogs ($165)
Get the Look
Shop More Navy Leggings

Allyson is a senior editor forBest Knockoff Luxury Clothing . She joined the company in 2014 as co-founder Katherine Power's executive assistant and over the years has written hundreds of stories forBest Knockoff Luxury Clothing . Prior to her career in fashion, Allyson worked in the entertainment industry at companies such as Sony Pictures Television. Allyson is now based in Raleigh, North Carolina, and is originally from Baton Rouge, Louisiana. She holds a BFA in theater arts. Her path to fashion may not have been linear, but based on the number of fashion magazines she collected as a child and young adult, it was meant to be.
-
The Easy-Yet-Elevated Outfit Formula Fashion People Will Be Wearing Straight Into Fall
Here are seven takes on the chic look.
-
It's Official: This Is the Flat-Shoe Trend to Wear With Fall 2025's Most Popular Legging Color
As seen in Los Angeles.
-
From Basic to Designer: This Outfit Trend Will Instantly Make Your T-Shirts Look The Row Coded
Pinky promise.
-
What's Just as Comfortable as Leggings But More 2025? This Cool Pant Trend
Chic and comfy.
-
Here You Go: 5 Trend-Forward Fall Outfit Ideas I Think Are Wildly Chic
These looks get a yes.
-
Blue Jeans Are Fine, But for Fall, Chic People Know This Controversial Denim Trend Looks Richer
Hot take incoming…
-
I'm a Fashion Editor on a Budget—27 Incredibly Chic Fall Finds That Will Get You More Bang for Your Buck
Stellar under-$150 finds right this way.
-
5 Chic End-of-Summer Denim Outfits That Will Make You Look Like a Fashion Person
From Stockholm to Paris to London.