Maddy Yip

Maddy Yip

Y Combinator Logo Batch: W25

Achievements

  • Co-founded Retrofit, a vintage fashion marketplace using AI to connect stores with online shoppers
  • Selected as one of 12 consumer startups in Y Combinator W25 batch
  • Built a platform aimed at making vintage and luxury resale more accessible and sustainable
  • Recognized in 'The 50 Youngest Kid Entrepreneurs in the US' and '40 Under 40' lists
  • Focused on building the top online inventory for vintage fashion, partnering with co-founder Sandra
  • Driving growth in the expanding U.S. and global resale market, projected to be huge by 2028

About Maddy Yip

Okay listen, let me give you the rundown on Maddy Yip. This kid’s the real deal. So, she’s a co-founder of Retrofit, a sick marketplace that’s changing vintage fashion game. Basically, she jumped into the startup world with a vision to connect vintage stores with online shoppers, but not just any way – they’re using AI agents to make it super smooth and accessible. Think about it: brick-and-mortar vintage shops have all this killer inventory, but they’re kinda stuck in the past, right? Maddy and her team are bridging that gap, turning vintage shopping into something you can do from your couch, with a curated, dope selection of pre-loved luxury gear.

And get this-she’s not just some random founder. She’s part of YC W25, which is a big deal. Only 12 consumer startups in that batch made the cut, and Retrofit is one of them. That’s a huge vote of confidence. It shows she’s got something special, a fresh approach that tech and fashion nerds are all about right now. The whole resale market is blowing up, especially in the U.S., and globally it’s gonna be huge by 2028. Maddy’s riding that wave, building what could be the go-to platform for vintage and luxury resale.

What’s cool about her story? It screams passion and hustle. She’s not just chasing the money; she’s on a mission to make vintage shopping easier and more sustainable. That’s kinda her vibe – combining tech, fashion, and sustainability. And she’s doing it with her co-founder Sandra, working to build the best inventory out there. That’s the kind of grit you see in the startup world-seeing a real problem, jumping in, and solving it with tech and style.

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And beyond all that, she’s been recognized everywhere-being named in lists like ‘The 50 Youngest Kid Entrepreneurs in the US’ and ’40 Under 40′ shows people see her as a future leader. She’s also into sharing her process, like dropping ‘Maddy Yip’s Guide to Life’, which tells me she’s about inspiring others and keeping it real.

Bottom line? Maddy Yip is a young, insanely sharp founder who’s transforming vintage fashion with tech. She’s got that mix of vision, hustle, and purpose that makes her someone to watch. She’s proof that starting something that really moves the needle isn’t just about ideas – it’s about execution, passion, and knowing what people want before they even realize it. No Cap, she’s just getting started, and she’s already crushing it.

Founder ID: 100945

Experience

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