In case you do prefer a dedicated maternity number, Quince also makes a very similar style specifically designed for expectant mamas

XUIBOL Plus Size Satin Sequin V-Neck Asymmetric Design, Solid Color Elegant Luxury Maxi Dress For Women, Suitable For Various Parties, Graduations, Weddings, Events, Galas, And Can Also Be Used As Formal Ball Gown, Bridesmaid Dress | SHEIN SHEIN Xpluswear Design Plus Size Formal Bridesmaid Elegant Pink Gradient Off The Shoulder Tulle Maxi Dresses [Pre-Order] XplusWear Xpluswear Design Plus Size Formal Black V Neck Long Sleeve Split See Through Tulle Maxi Dresses [Pre-Order] Black-2XL/18-20 FABRIC CARE Shall: Tulle Lining: Yes Cares: Machine Wash DETAILS Type : Maxi Dresses Occasion : Formal, Bridesmaid Elasticity : Slight Stretch Neckline : V Neck Pattern Type : Solid Sleeve Length : Long Sleeve Color : Black Season : Fall, Winter TIPS Due to the many variations in monitors, the color in the image could look slightly different, please take physical design and color shall prevail
While puffer vests can add bulk, note that she keeps hers relatively slimline
Shift silhouette
Dark Florals With Sleeves