There's no surer way to give your bump a boost than throwing on a dress. For some reason, wearing a frock instantly gives moms-to-be more confidence to go about their day. As the weather grows warmer, it's the perfect time to pack the expectant mama's closet with dresses that will add a spring to her step as she steps out the door. Check out 19 of our favorites for the season.
Hatch Collection Marais Dress
Pregnancy has never looked quite so glamorous! Hatch Collection's Marais Dress  ($298) can be dressed up or down with accessories to accommodate various events. The seam pockets also mean that moms-to-be can carry their necessities with them everywhere.
Japanese Weekend Maternity High/Low Dress
Every mom-to-be needs a go-to comfortable dress that she can slip on when she doesn't feel like thinking about what to wear. Japanese Weekend 's Side Tie Maternity Dress  ($98) is just that, with its soft jersey fabric, adjustable tie that accommodates a growing belly, and flattering design.
Hatch Collection The Mia Dress
As comfortable as it looks, Hatch Collection's The Mia Dress  ($288) can be worn on its own, belted above the belly, or with a variety of accessories to change its look with each wearing.
Isabella Oliver Allegra Dress
It doesn't get more comfortable than Isabella Oliver 's Allegra Dress  ($185). The soft, jersey dress has a band collar and removable belt for ultra comfort. With its easy, flowy look, it's perfect for Spring's parties and work events. Best of all, the style works well postpregnancy too.
Olian Stripe Maternity Dress
Olian 's Stripe Maternity Dress  ($150) is a beautiful way to highlight a growing bump this Spring.
Séraphine Lavender Blossom Knot Front Maternity Dress
Séraphine's Lavender Blossom Knot Front Maternity Dress  ($85) can easily work throughout an entire pregnancy — and beyond! Wear it on its own in the beginning and then paired over leggings when a bigger belly forces it to sit higher. And, when you're through, wear it in your early postpartum days just like Kate Middleton did the week after Prince George was born.
Maternal America Scoop Neck Front Tie Dress
We love the fun nature of Maternal America's Scoop Neck Front Tie Dress  ($146). The subtly patterned skirt and simple top will make it a staple in your maternity wardrobe.
Jessica Simpson Elbow Sleeve Lightweight Maternity Maxi Dress
Jessica Simpson 's Elbow Sleeve Lightweight Maternity Maxi Dress  ($59) can easily move from day to night on a warm Spring day.
ASOS Mamalicious Printed Scoop Neck Dress
We knew tribal prints would continue to be popular into the Spring, and ASOS 's Mamalicious Printed Scoop Neck Dress  ($60) is a great way to carry on the trend.
Sleeveless Braided Strap Maternity Maxi Dress
A Pea in the Pod's Sleeveless Braided Strap Maternity Maxi Dress  ($128) is the perfect dress to take you through the season. Pair it with a denim jacket during the cooler days of early Spring, and then wear it on its own throughout the Summer.
The Gap's Solid Sateen Shirtdress
Denim is bigger than ever this Spring, and The Gap's Solid Sateen Shirtdress  ($50) allows moms-to-be to wear the trend, even as their bellies are expanding.
Leota Cap Sleeve Sash Belt Maternity Dress
The basketweave detail and cap-sleeve design of the Leota Cap Sleeve Sash Belt Maternity Dress  ($168) just scream Spring!
The Gap's Floral Print Shirtdress
Nothing says Spring more than floral prints, and The Gap's Floral Print Shirtdress  ($65) embodies everything you want in a Spring dress — florals, lightweight, and sleeveless design.
BCBG Max Azria 3/4 Sleeve Wrap Maternity Dress
Tribal prints are represented in a bold way with BCBG Max Azria's 3/4 Sleeve Wrap Maternity Dress  ($198).
Séraphine Navy Flutter Sleeve Maternity Dress
Kate Middleton's maternity dress designer of choice, Séraphine, has another winner on her hands with the Navy Flutter Sleeve Maternity Dress  ($85). Made of soft woven viscose, it could easily become your favorite dress of the season.
Topshop Maternity Flower Smock Dress
The floral trend is front and center on Topshop's Maternity Flower Smock Dress  ($92).
Lilac Maternity Avery Dress
We love everything about this Lilac Maternity Avery Dress  ($108) — the high-low hemline, the Missoni-like patterned skirt, and the bold colors!
Rosie Pope Maternity Wrap Dress Classic
Leave it to Rosie Pope to create the ultimate classic wrap dress for Spring. Her Maternity Wrap Dress Classic  ($178) is bound to turn heads — both in the office and when out for the evening.
Boob Nursing Tee Dress Sleeveless
The best part of Boob's nursing tee dress sleeveless  ($69) is that it goes from maternity to nursing, making it a great investment.