Blanche's artistic training was brief, but he had enough talent and social connections to become successful. He lacked a consistent, distinct style. I rate him a solid step below the most famous portraitists of his day.
The images below are in approximate, not necessarily exact, chronological order. I hope they provide a sense of Blanche's stylistic evolution over his career.
The earliest dated work I could find.
Patroness of the arts, she also was painted by John Singer Sargent.
The actress, sister of illustrator Aubrey Beardsley.
I do not know who Lucie was.
Another version of the pose -- is this also Lucie?
Colette, the famous writer.
Here Blanche shifts to a kind of modernist-inspired style -- some suggest a Boldini influence, but I'm not so sure.
Mother of Virginia Woolf and Vanessa Bell. The light touch of the previous image is gone, replaced by a darker, harder appearance.
Marjorie Harriet Paget, Marchioness of Anglesey (1883-1946), oldest daughter of the Duke of Rutland. Her sister Diana married Duff Cooper and was the mother of the late author John Julius Norwich.
The writer, daughter of Julia Prinsep Stephen, shown above. This is the most modernist-looking portrait of the set, but not of the fashionable 1920s-1930s simplified style.
Also from the 1920s, a nice study of a flapper.
Like Blanche, of the demi-monde. Perhaps painted around 1930.