Maternity Bridesmaid Dresses: Fit, Sizing, and Comfort Tips

Quick answer

Order by your current bust measurement, not your pre-pregnancy size, and choose a style with an empire or A-line skirt that skims the bump. If your wedding date is more than eight weeks out, size to your expected second-trimester measurement and plan for alterations. Prioritize adjustable straps, pockets, and flowy skirts over rigid boning or a fitted sheath.

How to measure for a maternity bridesmaid dress

Measure your bust at its fullest point while wearing the bra you plan to wear for the wedding. Then measure your natural waist, which sits above the bump, and your hips. Compare those numbers to the brand's size chart rather than ordering your usual dress size. If you are between sizes, size up: taking in a dress is easier and cheaper than letting one out. Kennedy Blue dresses come in sizes 00-32, so you can often find a base size that accommodates your bust and hips without custom work.

• Measure bust, natural waist, and hips over the undergarments you will wear.
• Order to your largest measurement, then plan alterations for the rest.
• If the wedding is 8+ weeks away, add 1-2 inches to your bust and waist estimate.

Silhouettes that work with a growing bump

A-line and flowy skirts are the most forgiving because they fall away from the body instead of pulling across the stomach. Empire waistlines, where the seam sits just under the bust, create a clean line over the bump. Sheath skirts with a slit can work if the fabric has stretch or the cut is relaxed, but a rigid sheath is the hardest style to alter for pregnancy. Off-the-shoulder and flutter-sleeve designs also give you room through the arms and chest without feeling restrictive.

• Best: A-line, empire waist, flowy chiffon skirts.
• Workable: relaxed sheath with a slit and stretch lining.
• Avoid: structured bodices with heavy boning and no give.

Comfort features to look for

Pockets are a small but real comfort win on a long wedding day because you can carry a tissue or lip balm without a clutch. Adjustable straps or a tie back let you loosen the dress as the day goes on. Flutter sleeves and low backs add airflow. If the dress has boning, check that it does not press on your ribs or bump when you sit. Fabric matters too: chiffon and velvet move with you, while stiff taffeta holds its shape and can feel tight after a meal.

• Look for pockets, adjustable straps, and a tie back.
• Choose flutter sleeves or a low back for airflow.
• Test sitting and bending in the dressing room before you commit.

Timing your order and alterations

Order your dress as soon as you have a reliable measurement, especially if you are in the second trimester. Most bridesmaid dresses need one to two rounds of alterations, and a maternity fit may need a hem adjustment if you are shorter than the dress's stated height accommodation. Kennedy Blue styles accommodate heights up to 5'11", so if you are taller, ask about extra length before ordering. Schedule your first fitting about four to six weeks before the wedding, when your bump size is more predictable.

• Order early, then book a fitting 4-6 weeks before the wedding.
• Ask about extra length if you are over 5'11".
• Budget for hem and strap adjustments, not a full rebuild.

Decision rules for buying a maternity bridesmaid dress

• If your bust is growing: Order by your current bust measurement and choose a style with adjustable straps or a tie back, like Ava. Do not rely on your pre-pregnancy size. Re-measure one month before the wedding.
• If you want coverage: Choose a fully covered neckline and back, such as Holly, and confirm the A-line skirt does not pull across the bump when you sit. Test sitting and bending in the dress.
• If comfort is your priority: Prioritize pockets, flutter sleeves, and flowy chiffon or velvet skirts over structured boning. Mila and Allison both offer A-line skirts and soft necklines. Pick the dress you can forget you are wearing.

Kennedy Blue styles that suit a bump

• Ava: Ava is a boho V-neck dress with pleats on the bodice, a flutter sleeve, a sheath skirt with slit, a low back, and a tie feature in back. The tie back and flutter sleeve let you adjust fit and airflow, while the slit keeps a sheath skirt from feeling restrictive over a bump.
• Holly: Holly is an A-line dress with a fully covered neckline and back, short flutter sleeves, and pockets. The A-line cut skims the stomach, and the pockets plus full coverage make it a practical choice for a long wedding day.
• Mila: Mila is an off-the-shoulder velvet V-neck with pockets, spaghetti straps, and an A-line flowy skirt. The flowy A-line skirt and pockets give comfort and storage, while the off-the-shoulder neckline keeps the bust area open and adjustable.
• Allison: Allison is an off-the-shoulder dress with soft ruffles, a sweetheart neckline, and a chiffon A-line skirt. The chiffon A-line skirt flows over the hips and bump, and the off-the-shoulder draping adds room through the arms and chest.

Who this guide is for

Best for

• Bridesmaids who are pregnant and want a dress that fits now and at the wedding
• Shoppers who want an A-line or empire style with adjustable features

Not for

• Bridesmaids who want a rigid, fitted sheath with heavy boning
• Shoppers who need a custom maternity-specific pattern rather than a standard size