Best Sellers

Customer Testimonial

  • Feels Like Salon Hair

    "The quality is incredible and the color match was perfect. I felt so confident wearing my ThatGirl extensions!"

  • Perfect for My Wedding

    "I wore ThatGirl clip-ins for my big day and I’ve never received so many compliments!"

  • Easy and Life-Changing

    "These extensions are so easy to style and take care of — they’ve totally changed how I feel about my hair day to day. I finally feel like that girl!"

Hi, I’m Katie — founder of ThatGirl Hair Extensions

As a stylist specializing in blonding and extensions, I’ve helped hundreds of women feel confident with fuller, longer hair. I created ThatGirl to give you salon-quality extensions — at a more accessible price. Every product is chosen, tested, and loved by me.

Not Sure How Much Hair You Need?

Hair Type | Recommended Weight


Fine Hair | 60g – 120g (1-2 packs)
Medium Hair | 120g – 180g (2-3 packs)
Thick Hair | 180g – 240g (3-4 packs)

Our extensions are available in multiple weight options to help you build your dream hair — no guessing needed.

See the Looks. Love the Hair.

From custom blonding to flawless installs, every transformation is styled by Katie — blending color and extensions seamlessly.

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