Why would you think it was bizarre? Strange reaction.
I've done it, as mentioned up thread. The bride was politely incredulous that I felt I needed to ask, but I don't think it was because she really felt it was an odd thing to ask. More that it wasn't necessary because she didn't mind. Obviously if she DID mind, then it would have been worse not to ask. Depends entirely on the bride, who the op doesn't seem to have even met before I don't think? Tbf, although I wouldn't have cared at my own wedding, I'd err on the side of caution at someone else's wedding when I didn't know the bride well enough to ask. But since op REALLY wants to wear it, then ask. Bizarre not to actually.