Rebecca Ferguson - https://www.imdb.com/name/nm0272581/

Actress famous for her roles in Dune and Mission: Impossible, among others.

Recommend starting with a weight of ~0.8, adjust up with a complex prompt or when combining it with other LoRAs.

1216x832 works well, trained mostly on portrait sized images.

Adjust freckles, eye, and hair color with something like (freckles:0.5), (blue eyes:0.7) to get a slightly different look.