A curated boutique for girls, tweens & teens

Trend-forward, age-appropriate fashion for every occasion

SHOP NEW ARRIVALS

Shop curated summer favorites for beach days, camp, parties, travel and everyday wear — including girls’ swimsuits, tween and teen summer outfits, dresses, skirts, matching sets and vacation-ready styles.

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    Meet Sunday Best Kids

    Curated by a mom and inspired by real besties everywhere, Sunday Best brings you standout styles, trending brands, and that extra bit of confidence every girl deserves. Discover your next main character moment—right here.

      FEATURED SHOPS

      SUMMER DRESSES YOU'LL SEE US WEARING

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      Visit Us

      14 Forest Avenue

      Locust Valley, New York 11560

      (516) 939 - 8780

      hello@sundaybestkids.com

      Store Hours:
      Monday: CLOSED
      Tuesday: 11am-5pm
      Wednesday: 11am-5pm
      Thursday: 11am-5pm
      Friday: 11am-5pm
      Saturday: 11am-5pm
      Sunday: 11am-3pm
      Directions

      What Our Besties Are Saying

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      “My daughter LOVED her Sunday Best dress! Beautiful quality, and she never wants to take it off.”

      — Jennifer, NY


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      “Super fast shipping and the cutest boutique finds. Every piece feels so special!”

      — Melissa, NJ


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      “We get compliments everywhere we go. Sunday Best is our new go-to for tween style!”

      — Ashley, CT


      ⭐️⭐️⭐️⭐️⭐️

      “I was nervous about online sizing, but everything fit perfectly—and customer service is amazing!”

      — Laura, NJ


      ⭐️⭐️⭐️⭐️⭐️

      “My picky tween finally found clothes she wants to wear. Thank you, Sunday Best!”

      — Brooke, NY


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      “Obsessed! The quality is way better than big box stores, and shipping was so quick.”

      — Michelle, NY


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      “We’re in London and my daughter is obsessed with her Sunday Best dress. Fast delivery and lovely quality!”

      — Emma, UK

      FAQs

      What ages does Sunday Best carry?

      Sunday Best carries clothing and accessories for girls, tweens, and teens, typically ranging from sizes 5–16. Our collections are thoughtfully curated to suit different ages and stages.

      Is Sunday Best good for tweens?

      Yes — tweens are at the heart of what we do. Our tween collection focuses on trend-forward styles that still feel age-appropriate, comfortable, and confidence-boosting.

      Is Sunday Best an online store or a physical boutique?

      Sunday Best is both. You can shop online anytime, or visit our boutique in Locust Valley, New York to explore our collections in person.

      What types of products do you sell?

      We offer a curated mix of girls’, tween, and teen clothing, including everyday outfits, party dresses, accessories, and giftable favorites updated seasonally.

      What makes Sunday Best different from big box retailers?

      Sunday Best focuses on thoughtfully curated styles you won’t find everywhere. We prioritize quality, fit, and age-appropriate fashion, offering pieces moms trust and girls genuinely love wearing.

      How often do you get new arrivals?

      New styles are added regularly throughout the season. Our New Arrivals collection is updated often, so there’s always something fresh to discover.