LILY BROWN's New Collab with GOOD ROCK SPEED Launches Exciting Graphic Tees

Exciting Collaboration: LILY BROWN x GOOD ROCK SPEED

LILY BROWN, the well-known womenswear brand by Mash Style Lab, is set to launch its first-ever collaboration with the graphic t-shirt brand GOOD ROCK SPEED. Starting from May 1, 2026, at 12:00 PM (noon), fans and fashion enthusiasts can pre-order these exclusive items through the official online store, the MASH STORE app, and USAGI ONLINE. The official release in physical stores throughout Japan will begin on May 7, 2026.

The collaboration brings together the unique retro aesthetic of GOOD ROCK SPEED, deeply inspired by culture, music, and film, fused with LILY BROWN's classic sensibilities. This special collection reflects the creative synergy between the two brands, appealing to modern fashion lovers.

Collection Highlights

The collection features a carefully curated selection of t-shirts and tote bags, all showcasing striking designs that prominently feature iconic photographs from the archives of the LIFE magazine and timeless images of Marilyn Monroe. The items include:

1. LILY BROWN x GOOD ROCK SPEED x Marilyn Monroe Collage Photo T-Shirt
- Price: ¥6,930
- Color: White
- Size: Free
- This unique graphic design presents a four-frame representation of the iconic Marilyn Monroe, accompanied by her famous quote, "Always be yourself." The relaxed fit allows for unisex wear, crafted from 100% soft, washed cotton for ultimate comfort.

2. LILY BROWN x GOOD ROCK SPEED x Marilyn Monroe Vintage Photo T-Shirt
- Price: ¥6,930
- Color: Pink
- This t-shirt features a bold print of Monroe's photograph paired with the message "Be your own kind of beautiful," embodying empowerment and individuality. The vintage vibe is accentuated by noise effects on the photo print, also made from 100% washed cotton.

3. LILY BROWN x GOOD ROCK SPEED x LIFE PC Beach T-Shirt
- Price: ¥6,930
- Color: Light Gray
- This graphic tee draws inspiration from summer vibes, with monochrome body and vivid pink logos. Offers a relaxed fit that pairs well with various bottoms, making it perfect for daily wear.

4. LILY BROWN x GOOD ROCK SPEED x LIFE PC Cat T-Shirt
- Price: ¥6,930
- Color: Black
- A vintage band tee aesthetic featuring a pop of vibrant graphics. Suitable for both casual and chic looks, it can be styled either tucked in or worn out.

5. LILY BROWN x GOOD ROCK SPEED x LIFE PC Beach Tote Bag
- Price: ¥4,950
- Color: Light Blue
- This lightweight bag, designed for easy carrying, features a nostalgic ice-blue color, complemented by vibrant pink visuals in line with the Beach T-shirt aesthetic.

6. LILY BROWN x GOOD ROCK SPEED x LIFE PC Cat Tote Bag
- Price: ¥4,950
- Color: Lime
- A fresh tote in lively green with soft pink accents. The design matches the Cat t-shirt but with a color twist making it a perfect fashion statement.

All items are tax inclusive and highlight the fusion of LILY BROWN's vintage-influenced designs and GOOD ROCK SPEED's love for pop culture.

Release Details

- Pre-Order Date: May 1, 2026, at 12:00 PM
- Official Online Stores:

- LILY BROWN Official Store
- MASH STORE (App)
- USAGI ONLINE
- ZOZOTOWN
- Rakuten

- In-Store Release Date: May 7, 2026, at all LILY BROWN retail locations
- LILY BROWN Store List

About GOOD ROCK SPEED

GOOD ROCK SPEED is a contemporary cut-and-sew brand that embraces American casual, vintage, and pop culture, expressing the 'now' through their unique lens. Since its inception in 2010, the brand has engaged in meaningful collaborations with beloved pop icons, showcasing a commitment to vintage aesthetics in fashion.

About LILY BROWN

With a focus on vintage-inspired fashion, LILY BROWN offers collections that highlight intricate craftsmanship and innovative designs. Their collections radiate bold colors and attention-grabbing details, aiming to blend the essence of fashion history with modern styles.

Explore more about these brands on their official websites and social media: