We're beyond excited to announce our collaboration with the incredible Jamie Rosenthal of Lost & Found! From the moment we first discovered one of her stores on a sunny stroll between Santa Monica and Venice Beach, we knew we had found something special. Fast forward through months of calls and creative discussions, and we finally got to meet Jamie in London—marking the beginning of this exciting partnership.

Lost & Found, Jamie's renowned collection of boutiques in Hollywood and Santa Monica, is famous for curating one-of-a-kind artisan-crafted pieces from around the world. It was a natural fit to team up with Jamie, whose sense of style and flair for unique finds align so perfectly with Jumper 1234’s love of creativity and luxury. Together, we’ve crafted a special capsule collection, which brings to life the spirit of California, featuring iconic locations such as Baja, Eureka, and Big Sur.

Jamie Rosenthall Lost & Found founder wearing the Eureka jumper

Today we're getting to know Jamie and Lost & Found a little better...

A Unique Vision for a Unique Shop

Lost & Found store with colourful displays of lifestyle and fashion products

Jamie’s first Lost & Found shop opened almost 25 years ago in what was, at the time, a gritty part of Hollywood. Despite its rough-around-the-edges location, the area soon became home to some of the most creative minds in the city, including film industry professionals. Jamie’s shop became a destination for those seeking something beyond the typical retail experience—offering not only clothing but also art, performances, and curated pieces from artisans around the globe.

Lost & Found store

Q: What inspired you to choose that location, and how did the neighbourhood influence your early vision for the shop?

"I had always driven by on my way home and thought the building was charming.  All of the storefronts were being used as offices and were papered up, until one day I drove by, and a store had opened. It was Sofia Coppola’s brand “Milk Fed”. I was offered one of the 6 store front spaces in Winter of 2000 and now 25 years later occupy all 6 storefronts. The neighbourhood consisted of the iconic Capitol Records building and another building across the street that was filled with photography and film industry creatives, so it was an incredibly interesting and lively group to be around.

Despite its somewhat odd location, in a city where everyone drives it was actually a convenient local at a time where there was still very little retail. After the birth of my son, I left my then styling career and in 1997 launched Lost & Found as a wholesale collection of silk-screened T-shirts. So, I opened the first shop with only my designs. Within two years another space opened up and I expanded to home furnishings and furniture and from there fell back into my previous occupation, pre- Los Angeles as a women’s buyer on the east coast. I thought of these shops as space, a blank canvas and laboratory to experiment with and for others to experience." 

Collection of homewares items chairs, lighting etc at Lost and found store

Q: Lost & Found has become known for curating unique, artisan-crafted pieces from around the world. Championing small boutique clothing lines and artisan home goods. How do you select which pieces make it to your stores?

"Honestly, I don’t have one particular method to my madness! It’s both instinct and experience after almost 40 years of buying. I see the world through a social lens and am interested in the people who make things, how they are made and the materials they are made from.

Baja jumper and striped jumpers from collection

It’s really the human connection that is most important to me and something I have tried to emphasise in the shops and throughout my career. My family was in the leather goods business and manufactured all over the world, so I learned to appreciate artisanship with a global perspective at an early age. My 94 year old father still has the best taste of anyone I know, so I am fortunate to have learned from the best!"

Q: Lost & Found has developed a loyal, almost cult-like following. What do you think resonates so deeply with your customers and keeps them coming back?

"Lost & Found evolved into a lifestyle concept and quickly attracted the best and the brightest creatives in the film industry and beyond. It was unusual at that time to have a shop of this scope with one buyer and one vision.

I took this opportunity to depart from the mass market and concentrate on what interested me the most, mainly art, documentary photography, film design, craft, textiles and integrated product and ideas from around the world into the spaces having art shows, instillations and performances. 

Since both locations are off the beaten path, they are a surprising discovery and adventurous experience. By good old-fashioned word of mouth an incredible community amassed and I am eternally grateful they continue to return and spread the word!"

Lost and Found and Jumper 1234 collaboration styl,es hanging on a clothes rail by the window in the Santa Monica store

Q: We’re thrilled to be collaborating with you. Together we’ve co-created 9 styles. What excited you about this project? And what inspired the pieces in this exclusive collection?

"It’s been a blast to collaborate with Jane and Denise and their talented team and of course I love any excuse to come to London! I have been carrying Jumper 1234 for years and was excited to learn they had visited the Santa Monica shop and then reached out to discuss doing something together.

I love sweaters and yarns and at this point creating is far more interesting and satisfying for me. I grew up in New England and was an avid knitter and weaver in my youth and still am obsessed with sweaters, so this was a dream come true!

After throwing many ideas back and forth, I remembered that I had designed a California graphic tee capsule that was never produced due to Covid. So I tweaked that idea, revised the graphics from that collection to create the 'Welcome to California' styles.

Calinfornia graphic designed by Jam ie founder of lost and found that inspired the welcome to California jumpers

I added Fair Isle designs as an homage to my New England upbringing and memories of the sweaters I wore in the 70’s."

Collection from Jumper 1234 and Lost and Found on a rail hanging beautifully with Fair Ilse tank at the front

Q: The collection includes locations like Baja, Eureka, and Big Sur—places with a strong sense of character. What about these places resonates with you and how did they influence the designs?

Image montage of California beach flowers and hillside covered in yellow plants

"California has long captured the imagination of great authors and musicians; Joan Didion and Joni Mitchell to name a few! And like many before, I made that road trip from East Coast to West Coast resettling in Los Angeles which felt like a foreign country to me at the time. I am still amazed by the awesome scale and beauty of the west coast and wanted to celebrate some spots beyond the well-known cities. 

"Welcome to California" is the first sign you see as you cross the border. California is as much a state of mind as it is a place! 

Welcome to California signwelcome to California stack of all the colours of cashmere jumper

I love that Baja California is actually Mexico. Baja has long been a surfing and beach destination that stretches from the Pacific Ocean to the Sea of Cortez and is a jewel of a spot to visit. The striped crew and wraps are reminiscent of the Baja hoodies and blankets surfers brought back from Mexico to California in the 70’s. 

Baja Mexico, rocks over looking the sea with a cactus
Baja jumper with plaid shirt over the top

"To me Big Sur is the ultimate stretch of the California coastline which combined with the Redwood Forest is one of the most dramatic vistas and road trips you will ever take! Steinbeck thought so too!"

Big Sur jumper

"Eureka is at the top of California and actually was a part of the California Gold Rush which was responsible for early migrations from the East Coast. You may have heard of the expression “Eureka I found gold”? The dictionary describes eureka as an interjection used to express the thrill of discovery. And it’s fun to say!"

Jamie Rosenthal Eureka jumper

"All of the designs in this collection have a 70’s vibe. It’s my favourite period culturally and style wise on every level."

Montage of styles from the collection with 70s feel

Q: Can you tell us about your favourite piece from your collaboration with Jumper 1234? What do you love about it? And how would you style it?

"It’s hard to choose but I would say the  Cashmere Tonal Fair Isle Stripe Crew Neck Jumper in burgundy (or the tank) are among my favourites! I love the combination of traditional colours and patterns with a dash of neon pink that adds a modern playful twist to the design. This works equally well in the green colourway which also comes in a cardigan style."

Green Fair Isle cardigan

"I have styled it with my daily uniform, a classic navy suit with a flare legged trouser and my trusty Converse high-tops in a dark wine tone. I wear my grandmother’s turquoise Victorian amulet necklace everyday which pops beautifully against the burgundy tones along with my gold rings and my mother’s vintage bangles.

It’s all about mixing layers of colour and pattern that feel both timeless and modern. Of course, it goes without saying, that the entire Jumper collection is perfect layered with my Lost & Found striped t -shirts that I make in Portugal and a pair of favourite jeans!"

Jamie Rosenthall from Lost & Found wearing the collaboration cashmere jumper Fair Isle crew neck in burgudy

Q: What kind of emotions do you want people to have when they put on your cashmere designs?

"A spirit of adventure, discovery and freedom! These cashmere sweaters, tanks and wraps are like a second skin, and everyone needs to feel comfortable in their skin!"

Collection on a rail in store

Q: What’s next for Jamie and Lost & Found: As someone known for pushing boundaries and innovating, what’s next for you and for Lost & Found? Any new projects or ideas you’re excited about?

"I am very involved with the Corita Art Center which is an organisation close to my heart and am also an executive producer on a forthcoming documentary about Corita Kent and her influence on contemporary artists and the art world. She has been a hero of mine since childhood and these sweater designs carry her spirit!

I am working on plans to celebrate 25 years of Lost & Found in Los Angeles this Spring!"

Explore the Lost & Found x Jumper 1234 Collection

We’re so excited to share this collection with you, and we hope you love the designs as much as we do! We’re so grateful to Jamie for her insight and creative collaboration.  Each piece in this collection—whether inspired by Baja, Big Sur, or Eureka—is infused with Jamie’s love for California and her design expertise. It’s a beautiful mix of 1970s nostalgia, California cool, and timeless style. 

Shop the collection now

Gwen Tredinnick