I did find a day time ensemble from the 1924 inauguration, a red evening dress from the 1920s, and her official portrait, certainly one of the best First Lady portraits.
4th March 1925: American President Calvin Coolidge (1872 - 1933) leaving the White House with his wife Grace and Senator Charles Curtis, chairman of the Inaugural Committee, for the presidential inauguration ceremony at the Capitol. (Photo by General Photographic Agency/Getty Images)
Love the Hat. It's taller than a lot of 20s cloches, but I recall a period in 1924 where this shape was shown with Paris fashions. Love the winter coat. Love that it‘s a lighter color. She shows up very effectively amongst all the black formal frock coats. Looks like the dress matches the lapels and I see some embroidery or trim work. Pretty clearly a full ensemble. Coat looks like velvet. She is 45, and this looks very appropriate, stylish, not dowdy or matronly the way 1920s styles for middle aged women could so easily look. That’s a big plus. The bouquet is out of scale, but that’s the 20s, too. Love to see this in color. Definite A.
This dress - a fantastic color, I bet silk chiffon velvet, and an elegant line, especially with the asymmetric drape. The jeweled belt a good touch. Would love to see the train and shoes. Red was her favorite color. It’s stylish and fun, (which was Grace), without looking like a teenage flapper. A+.