I wore the same dress to my cousins wedding... well maybe not the same but basically the same... My white part however was more of a cream color...maybe offwhite... But it really is a very flattering dress... go for it
As long as it isn't all white, you are fine. I wore black and white to the last wedding I attended. I was a bit concerned (I'm an old-school chickie) but when I got there - over 50% of the guests were wearing black and white.
It is a beautiful dress - and you will look fabulous!