Mad Men Lesson One: If you're going to have a meltdown, it may as well be in a polka-dotted spaghetti strap party dress. At least that's the case for Betty Draper, who manages to choose exactly the wrong thing to wear when saying what's exactly right. Actually, that dress was interesting for several reasons:
1. The silhouette was still very traditional, but the colors were a big push forward for Betty D.
2. The silhouette was very sexy but the colors were very innocent and childlike.
3. The fabric was very expensive, but the overall effect was cheap.
Read more here about the fashions of Mad Men's Women.