Some judicious use of lighting and blending effects have been employed by Colette to make a case for siblings Karine and Dany to look alike here. Karine has a beard and a fuller face than his sister Dany, but Colette has worked had to shift the focus away from that.
Strangely, the fact that they wear their hair so differently doesn't seem to matter. All your focus is drawn to how similar their eyes, nose, and mouth seem to be. If Karine shaved and straightened his hair, he could probably pass for Dany.