Singin' in the Rain co-stars Donald O'Connor and Debbie Reynolds were re-teamed in the ebullient little musical I Love Melvin. O'Connor plays Melvin Hoover, the hapless assistant to Look magazine photographer Mergo (Jim Backus). When he falls in love with chorus girl Judy LeRoy (Reynolds), Melvin claims that he's the magazine's head photographer. Carrying the ruse to the limit, Melvin arranges to shoot a portrait of Judy and her entire family, insisting that it appear on the cover of Look. On the verge of being found out, Melvin is saved when his boss decides that Judy is photogenic enough to be a cover girl for real. The plot is so lightweight that it threatens to blow away, but the stars are cute as can be, and the musical highlights even more so.
~ Hal Erickson, All Movie Guide