First of all, this movie is still hysterical. It is a work of art. Although Marilyn got top billing, she's clearly out-performed by both Lauren Bacall and Betty Grable.
Let me, for a brief moment talk about the "Diamond Collection" version of How To Marry A Millionaire. When you think of remastering, especially older films made on Cineascope or Technicolor, you think of rich, vibrant-colored stories in particular the Rogers and Hammerstein collection. Excellent. You, especially, think of the remastered Disney Collection. Excellent. Both of which, were competing genres at the time Marilyn was making a name for herself. You might even throw the remastered "The Wizard of Oz" (1937) in the fray. And yet, this "Diamond Collection" is barely passable as a DVD version. This isn't a distinct restoration. The images, even in the special feature section "Restoration Comparison" shows how little the previous version and the film version hasn't had much improvement with this collection. Don't get me wrong, the sound reproduction is superb, but this is comedy and a lot depends on visuals.
Recently, I started to repurchase the Disney collection-- their "Platinum 2-disc" set. Cinderella, Peter Pan. And, there is a profound difference between the last version and this deluxe version. The Sound of Music, the same thing.
This isn't to say, it's not worth watching, but there's little to no improvement in picture quality. And, that's too bad, the technology is already here and their apology for "grainy film loss" is no excuse for not investing in a better color transfer system.