Modern Coastal Girls Bathroom Design Ideas // Shop the Look

There’s something so refreshing about coastal-inspired design—but give it a glam, preppy twist and you get this Modern Coastal Girls Bathroom that feels light, playful, and elevated. Designed with a young tween or teen girl in mind, this space blends pale blue hues, polished finishes, and just a pop of pink for a bathroom that’s as functional as it is fabulous.

If you’re gathering modern coastal girls bathroom ideas, this light-and-airy space has all the inspiration you need to bring that fresh, seaside-meets-chic vibe to life. It’s one of two unique girls bathrooms in a family home (Project Rustic Contemporary) designed to reflect each sister’s personality—each space thoughtfully layered, beautifully practical, and totally their own.

Modern Coastal Teen Girls Bathroom with Pale Blue Walls, Hex Tile Floors, and Colorful Art.

Design Highlights:

Vanity + Countertop

A crisp white vanity topped with a quartz countertop sets the tone—classic, clean, and endlessly versatile.

Mirror

The round wall mirror brings in a bit of glam polish while balancing the clean lines of the vanity.

Lighting

We used a brass 3-light flush mount for a soft overhead glow and paired it with white speckled glass sconces flanking the mirror for layered, practical lighting with a touch of sparkle.

Tiling

The dark grey hex tile grounds the space with a bold contrast underfoot. On the walls, a glazed ceramic tile wraps the lower half in a creamy gloss, while the matte ceramic tile gives the shower clean, horizontal lines that keep things feeling modern and coastal.

Bath Towels + Mat

We layered in the plush Turkish cotton towel collection and a stonewashed cotton rug—essentials that are equal parts soft, luxe, and practical.

Art + Accessories

A colorful abstract print adds playful personality and a punch of color that feels fun—but not overdone.

Touches of brass and gold throughout—from the towel rod and ring to the white and blue bath accessories—keep the palette warm and cohesive, adding subtle shine that ties the look together.

If you're gathering modern coastal girls bathroom ideas, this light-and-airy space has all the inspiration you need to bring that fresh, seaside-meets-chic vibe to life.

DESIGN TIPS:

  • Choose one bold flooring moment (like hex tile) and keep other surfaces more neutral.
  • Mix cool tones like blue with warm metals to keep the space feeling balanced.
  • Add unexpected color with artwork and accessories—it keeps things feeling fresh and youthful.

Design Boards & Sources
– Use code PEGGYSAYSMIX for any PHI Home items

– Contact us for the best deals on Rugs and Lighting

Keep scrolling in the window to see all of the items in the design board!

Modern Coastal Teen Girls Bathroom with Pale Blue Walls, Hex Tile Floors, and Colorful Art.

Alternate Concept

Keep scrolling in the window to see all of the items in the design board!

Shop the Lighting at PHI Home here
– Use code PEGGYSAYSMIX
– Contact us for the best deals on Rugs and Lighting

Designed with a young girl in mind, this space blends pale blue hues, polished finishes, and just a pop of pink for a bathroom that’s as functional as it is fabulous.

Paint Color + Floor Plan

The Color Palette: Soft Blue, White, and Hints of Coral

The upper walls are painted in a pale blue that feels serene and beachy, while the lower walls feature Cloé Ceramic Tiles for texture and shine. Together, they create a breezy base for the brass accents and pops of color throughout.

Paint color is Borrowed Light by Benjamin Moore

Upper bathroom wall painted in Borrowed Light by Benjamin Moore pale blue. // Peggy Haddad Interiors
Modern coastal girls bathroom layout with quartz vanity, round mirror, and hex tile floor. // Peggy Haddad Interiors

Ready to design her dream bathroom?

Whether you’re refreshing a bathroom or designing a brand-new space, we can help you create a look that grows with her—beautiful, layered, and thoughtfully personal.

Thank you to our wonderful clients for allowing us share their bathroom and sources with our readers. If you have any questions about the room or any sources, leave a comment below!


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We know interior design can feel overwhelming—there are so many choices and so little time (especially if you’re balancing work, family, and life!). That’s why we’ve made our services simple if you want more design support:

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A note about PHI HomeSome of the products linked in this post are to-the-trade pieces from our shop, PHI Home. Typically to-the-trade pieces are purchased exclusively by trade professionals (i.e. interior designers) at wholesale, and then resold to their clients at a markup. We’re delighted to extend access to our favorite trade furniture and décor to everyone, regardless of whether you’re our client or not. Should you require a different size or color variation, please don’t hesitate to reach out to us.

Prices at PHI Home are never above the internet minimum advertised price “IMAP” (set by the manufacturer) plus shipping. By using the coupon code PEGGYSAYSMIX, you can enjoy a discount off the IMAP pricing. Moreover, if you come across a lower price from another online retailer, kindly drop us an email at info@peggyhaddadinteriors.com, and we’ll gladly match that price (remember, our pricing includes threshold shipping).

When you choose to shop with us for your premium furniture and décor needs, you’re not only supporting our small business but also the entire interior design industry, rather than a large retail corporation. Your support is greatly appreciated! For further inquiries about our shop, including details
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