Wow! That Monsignor Gilles Wach even gets to have the little hood on the back of his mozetta!
All the mozettas worn by the Canons and superiors of the ICRSS have a little hood as do all other traditional mozettas worn by prelates, bishops, cardianls, and the Pope.
In the first photo, the Sister in front of Monsignor Wach is Sister Diana-Mary of Divine Mercy, from USA.
The other two professed nuns are: Sister Madeleine-Marie of San Joseph, guardian of the Royal Heart (from WI-USA) and Sister Charlotte-Marie of Sales (from France).