Is this pink dress long enough to wear to a black tie event?

I also have a purple satin and a teal satin but they seem more cocktail to me.

What do we think might work?
ETA I stopped in a local boutique that sells formal wear and asked the owner what she’s been selling for this event. She said floor length and darker colors. I didn’t tell her but I hated all of them. So matronly!
She didn’t think the pink dress was a good choice.

I was just invited to a Viennese Waltz a week from today. 

This post has 3 photos. Photos uploaded by this member are only visible to other logged in members.

If you aren't a member, but would like to participate, please consider signing up. It only takes a minute and we'd love to have you.