Fashion / Vol. IV Best Of 4 products · Updated September 9, 2026

WORTHEVERYCENT

Cost per wear, calculated honestly, including the three that were not.

Bags lined up in a Tokyo hotel room
Tokyo · the two that always come
Saint Laurent sunglasses on a sunlit table
A Chanel bomber jacket
Matte alligator Birkin 30
eleven years, better every year →
Lauren tested
Words & testing · Lauren Fowler Open story ↓ Photograph · Lauren
Filed under
Fashion / Investment / Best Of

Tested over
11 years of receipts

Prices checked
09.09.2026

Published
February 26, 2026

Best by Lauren may earn a commission when you shop through certain links. Every product here was bought with my own money or tested for at least six weeks. No brand has paid to be included, and nothing is ranked higher because it pays more.

I keep a note on my phone with what I paid for expensive things and roughly how often I use them. It is not a glamorous document and it has saved me a lot of money.

These are the pieces where the number came out well. At the end, the three where it did not.

The ShortlistJump to a product
01
Carry-on bags loaded into the back of a car
Louis Vuitton
sixty cents a wear →
✦ 2027 Winner · Best Carry-On
Louis Vuitton

Keepall 45

The one bag I would replace immediately if it were lost. It has been rained on, sat on, and shoved into overhead bins on four continents, and it looks better for it.

Why I love it
The only bag I own that improves with abuse.
Good for
Weekends · Checked-bag avoidance · Everything
The verdict
eleven years, better looking every year
Shop — $2,400
02The ones I never take off
Saint Laurent

SL M3 Sunglasses

Bought in an airport, worn every day since. I have lost two pairs and bought them back both times.

Why I love it
They suit a bare face and a full face, which is the whole trick.
Good for
Every face · Travel · Bad-sleep days
The verdict
the ones I never take off
Shop — $395Net-a-Porter
Saint Laurent sunglasses on a sunlit table
Saint Laurent
03
Bags lined up in a Tokyo hotel room
Bottega Veneta
The carry-on that goes under the seat
Bottega Veneta

Hop Bag

It goes under the seat, it holds a laptop, and it has never once looked like a travel bag. That combination is rarer than it sounds.

Why I love it
Soft enough to squash under a seat, structured enough for dinner after.
Good for
Flights · Everyday · Dinner
The verdict
holds more than it has any right to
Shop — $4,200Net-a-Porter
04
Hermès

Birkin 30, Matte Alligator

Not a recommendation so much as a fact. It is the piece everything else in the closet is measured against.

Why I love it
It is the only bag I own that will outlive me.
Good for
Forever
The verdict
the one thing I would never sell
Matte alligator Birkin 30
Hermès

The three I got wrong

A pair of designer boots worn four times in three years. Beautiful, impractical, and a reminder that I buy shoes for a life I do not lead.

A structured tote that only works with an outfit I have to plan around. Anything that requires the rest of the wardrobe to cooperate is a bad investment however good the leather is.

A coat bought in a sale, in a colour I would never have paid full price for. The discount was the entire reason and that is never a reason.

The test before I buy anything expensive

Would I buy it at full price, today, if it were the last one? If the answer needs the word "sale" in it, I do not buy it.

And: can I name three specific occasions in the next two months? Not "it would be great for travel" — three actual days.

Eleven years of receipts9 frames · Cost per wear
Bags lined up in a Tokyo hotel room
The two that always come
Carry-on bags loaded into the back of a car
Saint Laurent sunglasses on a sunlit table
Replaced twice
Sunglasses on the lawn
A Chanel bomber jacket
Matte alligator Birkin 30
Never selling
Walking up painted Spanish tile stairs in a white tiered skirt with a woven tote
Grey flatlay of fragrance vials, a black lipstick, car key and a lace pump
Leopard-print skirt and camisole edit
Questions
How do you calculate cost per wear?

Price divided by the number of times you have actually used it — not the number of times you imagined using it. I keep the count in a phone note and update it once a season.

What is the best first investment bag?

Something soft, dark and under-the-seat sized. The Louis Vuitton Keepall has the best cost per wear of anything I own, at about sixty cents.

Are designer sunglasses worth it?

Only if you wear them daily. Mine are the single highest-use expensive thing I own, and I have replaced the same pair twice.

Best by Lauren Awards 2027
xo Lauren
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