I totally disagree with the critique here--I love this movie
I have always liked I Love Lucy, and the first time I saw Fancy Pants, I thoroughly enjoyed it. I just re-watched it for about the 3rd time through Netflix. Lucille Ball is gorgeous, and her beauty is more apparent than in I Love Lucy because of the beautiful color.
Is it silly? Yes. Lucille Ball (at 39) and the man who plays Cart Belknap (at 46-47) are both a bit long in the tooth to be believable as a young, single woman and the young man who wants to marry her, but it's still a funny movie.
I recommend it for anyone who's never seen Lucille Ball in anything but I Love Lucy.