It has some stretch
Also, make sure you choose the colours and the style as per the theme of the party and, of course, the season
Unless the ceremony is outdoors, you likely wont be outside that much (and the church or funeral home may be cold inside)
Get their insight on these aspects and make a wise decision that will not inconvenience them
The most notable change in the gown from its introduction around 1720 was the tighter-fitting bodice that was cut separately from the skirt, oval sleeve ruffles that replaced the wing cuffs of the previous decades, and the addition of applied decoration, often in the form self-fabric, silk flowers, and delicate passementerie that was stitched down the center-front opening and across the front of the petticoat
Featuring a romantic deep V-neckline, soft puff sleeves, and a flattering empire waist, she creates the most graceful silhouette especially stunning for maternity sessions