Of course, should the idea of red be "on theme" for the nuptials or wedding you're attending, then it's entirely acceptable. I put the question out to our audience via Who What Wear's private shopping group on Facebook (join So… Should I Buy This? here), and the feedback was mixed. One user highlighted one very important situation where this would be frowned upon: at a Chinese wedding. Traditionally, the bride will wear red, and it would be considered in poor taste to follow suit. Some couldn't quite pinpoint why it didn't feel right to do but agreed it was best avoided. However, for the majority, the sentiment was that so long as it's not a white or cream look you're turning up in, red is entirely fair game.