The Maternity Cosima Nap Dress - Navy Trellis

$161.88 ~~$228~~ In stock

While every dress that includes our proprietary Nap smocking has some degree of flexibility, we handpicked our very favorite styles that work for maternity, postpartum, and beyond. Trust us, we have a lot of babies at HHH HQ.

A note to our Nap Dress Nation Besties: we didn't change anything to make this dress "maternity-friendly"; it's the same product you know and love. We just wanted to make it a little more clear to new customers with this separate page!

The Cosima Nap Dress
The Cosima Nap Dress is easy, breezy, and totally chic, featuring a fully-smocked (and bra-friendly!) bodice and a crisp, high boat neck fit. You can wear Cosima with flat sandals for a quick out-the-door look, or add a belt and statement earrings for a little something extra.

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Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Lucy ★★★★★ Aug 20, 2026

I was worried about finding something that would still fit after the baby arrives, but the smocking gives it so much give that I've worn it comfortably at eight months pregnant and while nursing. The navy trellis pattern hides spit-up surprisingly well too.

Olivia ★★★★★ Aug 18, 2026

The smocking on this dress is a lifesaver—it stretches with my bump but still looks put-together when I wear it to brunch. I've lived in it since 30 weeks and honestly plan to keep wearing it long after baby arrives.

Olivia ★★★★★ Aug 17, 2026

This is my third trimester and I’ve basically lived in it since month five. The smocking stretches exactly where you need it without ever feeling tight, and the navy trellis print hides every stain my toddler throws at it.