The PRB is a specific small group, the leader of which was Dante Gabriel Rossetti, and he was evocative in his works, but probably the least talented in the technical sense. Lord Leighton (one of the artists of those two blam posted) wasn’t, I don’t thing Waterhouse (the other artist up there) was either. Alma-Tadema, who with Leighton had a similar talent for both stunningly realistic scenes and prolific output, is probably my favorite (he did a lot of scenes imagined from classical antiquity).
IIRC, Rosetti was renowned for paintings that depicted three female characters which all looked alike since they were based on the same model who had posed for each one.
Cheaper than hiring three models, I guess.