Yes, it's not like a groom to be seeing his bride in her wedding dress. However, the girl wearing the prom dress would generally like to keep everything as a surprise when she has the dress on for the prom, her makeup done and her hair done. If he has seen then there is no problem.
Obsessed with the Dress - 2013 Seeing Red 1-5 was released on: USA: August 2013
The groom seeing his bride before the ceremony is considered bad luck, but there is nothing wrong with the groom seeing the maid of honor or the bridesmaids.
Say Yes to the Dress - 2007 Seeing Eye to Eye 4-18 was released on: USA: 18 December 2009
If a guy thinks you are pretty and then gets speechless after seeing you in a dress then he is very interested in you.
Sweetheart, if he saw me in a dress, he'd be rushing to bleach his eyeballs.
Dress and bandage the burn before the limb is splinted.
dress - 2013 was released on: USA: October 2013
The Dress - 2013 was released on: USA: February 2013
I wore this dress once before.
Say Yes to the Dress - 2007 The Path to the Dress was released on: USA: 16 July 2010
Say Yes to the Dress - 2007 Not Your Mama's Dress was released on: USA: 22 June 2012
The Purple Dress - 1918 was released on: USA: May 1918