Please help: Is this dress good for a conference? thanks!

Most of my dresses are black/white/blue.
I really like this set. But not sure. I need to do a presentation in a conference.
Thanks.

http://www.metrostyle.com/item/81349/500617/short-sleeve-shrug-white-l


Thank you for all of your input. Then, How about this one?



or this one?


or this one with the little white piece in the first picture?