The Maternity Cosima Nap Dress - Black Jersey

$109 ~~$218~~ 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.

Customer Reviews (4.8 / 5 · 5 reviews)

Ruby ★★★★★ Aug 21, 2026

I'm 34 weeks and this is the only thing I want to wear—the smocking stretches so easily over my bump but doesn't sag on my shoulders now that I'm postpartum. The black jersey hides every spill and it's soft enough to sleep in, which is basically all I do these days.

James I. ★★★★★ Aug 20, 2026

The smocking across the bump is genius—it stretches exactly where you need it without ever feeling tight, and the jersey is so soft I basically live in it now. Wore it all day at 8 months pregnant and it still looks put-together enough for a baby shower.

Grace P. ★★★★★ Aug 18, 2026

This is my third Nap dress and the black jersey version is perfect for hiding the chaos of newborn life. The smocking gives me room to breathe after meals but still holds its shape when I’m chasing my toddler. I’ve practically lived in it since week 38 and it’s still my go-to for quick errands.