formal white dress Maxi with Draped Neckline and Side Slit for Bridal or Engagement Abbie White Maxi Formal Dress Body/Linning pretty HARLEY|Plus Size V-neck Lace

Key Features : Fabric : Saree-style fabric with smooth texture and lustrous finish

And fear not as below there are loads more cute little white dresses (all under $200)

Dress code: Formal, Black Tie Size range: 14 - 16 | Material: Scuba Crepe | Length: Floor Length Price at time of publication: $249 For a Black Tie Wedding: Azazie Lani A-Line Pleated Stretch Satin Floor-Length Dress Dress to the nines in this sophisticated satin gown

But now

I have not checked to see what the mother-of-the-bride plans for the rehearsal dinner and, perhaps, I should do that

Complete the look with sleek white kitten heels and delicate drop earrings