Spain, Greece, London—Euro summer has officially begun, and as our timelines and FYPs fill up with new season outfit inspiration, it's clear that one exact bag is leading the way as the accessory of summer 2025, and it's a personal favourite of Sienna Miller. Enter the Sézane Justine Basket Bag.
Sienna Miller has been spotted carrying this bag since last year.
I'll admit, I'm cautious of claiming 'It' status for this bag simply because this often evokes ideas of a fleeting success or of the moment trend, and this bag is the opposite. Timeless in its design with an innate French edge thanks to the brand's French origins, Sézane has crafted the ultimate basket bag for those looking for a designer look without the accompanying price tag.
The Justine is a classic open-top tote with considered design details that put it in the same race as designer buys. The first thing to point out is the composition of the bag, handwoven in the brand's atelier in Madagascar from raffia. Leather accents come into play for the handles. Find both a longer over-the-shoulder offering, which can be tucked inside when not in use, as well as shorter tote handles. I personally have another bag that features both kinds of handles, and can't tell you how useful it is to switch between! Plus, all your belongings can be kept safe by the internal lining with a drawstring closure.
As a brand, Sézane is known for creating iconic pieces, and each time a new best-seller is born, the brand leans into expanding the variation of the piece. Consider the beloved Will Jacket or the highly sought-after Gaspard Cardigan, which come in a range of colours and fabrics. In the same way, the Justine is crafted in a variety of forms with smooth raffia alongside intricate floral motifs, natural beige alongside a striking green that I haven't stopped thinking about, and various patterns too.
Florrie carries the Mini Justine Basket Bag.
Whilst the most spotted size of the moment is the regular, a spacious everyday style that can be filled with all your city or seaside necessities, there is also a mini and maxi version, so really, the choice is yours.
Keep scrolling to shop the Sézane Justine Basket Bag, plus the mini and maxi sizes.
Shop the Sézane Justine Basket Bag:
No matter this year, this bag will always feel oh-so classic.
I've officially added this basket bag to basket. The deep khaki shade feels so unique and yet easily blends with all other shades in my wardrobe.
Imagine strolling through cobbled streets with a baguette poking out the top of your basket bag—trés chic!
I love the colour play with the leather handles.
The intricate flower details are just so sweet.
Lean into the golden glows of summer with the metallic details on this basket bag.
This may be sold out right now, but you can create an alert to find out first about restocks!
Shop the Mini Justine Basket Bag:
The sweet basket bag I'm carrying above! Yes this style also comes with a longer crossbody strap, and sweet shorter handles.
The heart motifs are incredibly cute, but if you want the choice, the other side of the bag is plain so you can choose which you want day to day.
Shop the Maxi Justine Basket Bag:
There is something to elevated about the tonal stripes.
I often use my trusted basket bag as a travel tote thanks to its spacious size.
I can't wait to fill this tote with books, SPF, towels, swimsuits and more this summer.
I have a feeling that the bold red stripes will be extremely popular.
Carry with you or pack for your next holiday.
-
J.Crew Is Having a Major Sale RN—Here Are 29 Pieces I Immediately Added to My CartUp to 50% off.
-
In Case You Haven't Noticed, Everyone and Their Mother Is Wearing This Expensive-Looking JacketRightfully so.
-
This Summery Denim Trend Is What Everyone Will Order to Wear With FlatsIncluding this editor.
-
This French Brand Has the Perfect Anti-Canvas Tote—and It's Already TrendingIt's time to say goodbye to that scruffy old canvas shopper.
-
Sienna Miller Just Made Me Want to Wear the Jeans I Stopped Wearing Years AgoIf she wears them, they're still cool.
-
Sienna Miller's Under-$200 Madewell Dress Is So Chic She Wore It on the Red CarpetIt's somehow still in stock.
-
Sienna Miller Just Wore the Boot Trend Fashion People Use to Make Jeans Outfits Look ChicerI'll be copying this look all season.
-
This Boot Trend Is Considered Intimidating by Some, But Sienna Miller Just Proved How Chic It Actually IsSo nice she wore them twice.
