What is the female equivalent of morning dress ?
My guess, which I have arrived at after thinking about it, rather than parroting it out of an etiquette manual, is something daytime-dressy, such as a colored suit with a silk blouse, or a silk dress, with a dressy hat. The wikipedia article you point to says that morning dress is not worn after 5 p.m.; I think that the same goes for hats–the kind Brits wear to weddings and Ascot.
From 5 to 7 would be the cocktail hour, so I assume cocktail dresses are the it thing then.
Afterwards, evening dress. Gowns.
I went back to the era the practice started in for my research. In the Victorian era, women wore different costumes at different times of the day, just as men did. The were expected to wear a certain type of costume (This includes dress, and jewels, which were appropriate for the season as well as expected to be as fashionable as their station called for.) in the morning, one in the afternoon to recieve visitors, and had dresses for tea time, dinner was a formal dress event. (You can read more about the fashion trends of that era here.) This image from this article, is probably close to what you are looking for.
ETA: Perhaps look at images of the upper class British women at formalish morning events? Some of the things Princess Diana wore come to mind.
Although, thinking about it, elements of Victorian fashion are trendy for some right now. There are probably some formal dresses with Victorian style elements that you could wear for a formal event early in the day.
ETA: Suits would be worn for traveling, or going out on errands by the way. The wouldn’t be worn to a morning event. If the lady was going out to call on someone or shop, she’d put on a suit. A&E’s Sherlock Holmes episodes had some equisite lady’s traveling suits in them.
Coming back to add, I am not certain if a lady who didn’t have far to travel by train or the like would wear a suit to call on her friend/neighbor. I don’t think so. She’d wear an appropriate costume. It depends on the nature of her journey, and how far she is going. The episode I am recalling had a lady who had to take a train trip of some length to consult Sherlock Holmes, the Solitary Cyclist I think it was called.
I found two examples to show what I mean, these are formal gowns that I would say are the modern equivalent of morning dress for women with Victorian style elements. Here and here. There are others like that out there, for the varying seasons and in differing levels of formality.
Is there a female version of the US Solictor-General’s traditional outfit (which is based on Victorian morning dress).
Can you post a link to an image of said attire, please?
I think that would be this, also called a cutaway coat, traditionally worn with striped trousers and a grey waistcoat and ascot, or whatever that’s called. It’s kind of confusing, because morning dress started out as informal dress, for men and women. It was meant to be modest and frugal (according to your station).
Nowadays, “morning wear” is daytime formal dress for men (usually seen in wedding parties before 6 pm), and seems to correspond to “ball gown” for women, which is the most formal of all women’s attire. According to the Wiki chart at that link, there is no distinction between morning and evening for contemporary women’s formal fashion.
I guess it depends on the context that prompted the OP whether formal attire is implied.
Have you seen the Race scene @ “My Fair Lady”?