My daughter is international fashion photographer, Isabella Lombardini.
She uses Leica cameras. An S2 Pro, an SL and she often carries her old Digilux 3 as an emergency spare. She also does some video work.
She sometimes shoots in monochrome, and sometimes converts files from colour to B/W, as well as working in colour.
She often has a team working with her: a stylist, makeup artist, an assistant, and sometimes a video cameraman. She likes to be 'hands-on, but when she has a team, she is the art director, and she usually does post-production and editing work herself.
She changed from Lightroom to Capture One last year, and has told me that she finds it terrific to use. She shoots in RAW most of the time, and I know in the studio she often hooks up her S2 or an SL to a computer running Capture One so that she can check tiny details of the shoot almost 'on the fly'.
You can check out a few samples of her work on her website, http://www.isabellalombardini.com or find a lot of her work on Instagram, https://www.instagram.com/isabellalombardini/ or to see the best range of her pictures, just search on Google IMAGES using the phrase 'Isabella Lombardini'.
She has also been featured in Leica's S Magazine: http://s-magazine.photography/ceemes/en/photographers/isabella-lombardini-2269.html