backless white mini dress Vestido Lana - Blanco 510 Bust Square Neck Off White Bow

Lining: Beige short underskirt

She used this Barbie in a campaign advertisement she filmed for her new line last summer

So then I was going to find one website (Azazie, Birdy Grey, Revelry, David's Bridal, etc) and find a few different shades of blue to have the girls pick from for something almost exactly like the picture below (from Revelry)

"You can style our Regency style wedding dresses with a fascinator or a one-tiered simple veil - the puffy sleeves are such a statement, you dont need too many accessories to look glamourous," suggests London-based bridalwear designer Katya Katya

Black Square Neck A-Line Midi Semi Formal Dress Bust: Wear the bra you will be wearing with the dress, and pull the tape across the fullest part of the bust