Can I wear a black and white dress to a wedding?

I am attending a wedding tomorrow night as someone’s date. He is in the wedding so he will be dressed in formal attire. Most of the dresses in my closet or black, white, or a combination of the two. I know I can’t wear white, and I know some frown upon black. I have two dresses that are black and white. One is mid-calf length with spaghetti straps, mostly black with some white trim. The other is a sleeveless/halter style, just below knee length, with a black and white floral pattern. Could I get away with wearing one of these?? Thanks for your help!
I do not know the bride or the groom so I will not be able to consult with either as to what they would prefer me to wear.

either is fine

Black and White Wedding Dress from WeddingDressFantasy.com

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