The good: "Vip" is an incredible bit with a pretty solid payoff; the Hudson-Randall chemistry is impeccable (even if the Hudson-Day chemistry is less delightful than in Pillow Talk); Doris Day's dresses; the gentle skewering of the advertising industry; the wisecracks.
The bad: Doris Day's hats; a paint-by-numbers third act; a feeling of having seen this all before.
All in all, averages out. There's no reason to watch this if you've already seen Pillow Talk, but there's no reason to run away from it screaming.
★★★