I'm torn on this issue:
It's lovely that someone cares enough to make the effort to dress up for you. In fact I appreciate the effort more than the appearance.
Lingerie is supposed to make women appear at their most sexy, but the reality is that if you fancy someone, they look sexy in a pair of stained tracksuit bottoms and an old T-shirt.
Some of the best shags I've ever had were when neither of us looked at our best, semi-conscious bleary-eyed, hair all over the place etc.
When I used to have long-term relationships, I came to dread these romantic evenings of candles and lingerie because it seemed so forced and there was a weight of expectation.